Everything above as machine-readable JSON: what is sourced, what is reasoned, what must be verified, and the four things nobody has answered yet.
{
"trip": "kandersteg",
"name": "Kandersteg / Oeschinensee",
"where": "Bernese Oberland, Switzerland",
"task": "Finish planning this trip. Fill every entry in `unresearched` with sourced figures in the same shape.",
"assumptions": {
"travellers": 2,
"rooms": 1,
"dinner_for": 2
},
"fx": {
"base": "EUR",
"rates": {
"EUR": 1,
"CHF": 1.0681
},
"checked": "2026-08-24",
"note": "Reference rates, updated by hand. Do not call a currency service."
},
"readiness_percent": 81,
"planning_state": "Ready to book",
"claims": [
{
"field": "travel.duration",
"status": "estimate",
"value": [
7.5,
7.5
],
"unit": "hours by car from Antwerp",
"basis": "728.5 km one way. Route-planner guidance from Rome2Rio, not a live routing result — it varies with traffic, route and stops.",
"checked": "2026-08-25",
"source": "https://www.rome2rio.com/s/Antwerp/Kandersteg"
},
{
"field": "cost.gondola.main",
"status": "fact",
"value": [
80,
80
],
"currency": "CHF",
"unit": "Return gondola, two adults — main summer, 15 Jun to 21 Sep",
"conditional": "Which fare applies depends on the dates, which are not chosen.",
"source": "https://www.oeschinensee.ch/en/tarife-fahrplan/",
"checked": "2026-08-25"
},
{
"field": "cost.gondola.shoulder",
"status": "fact",
"value": [
72,
72
],
"currency": "CHF",
"unit": "Return gondola, two adults — shoulder season, 9 May to 14 Jun and 22 Sep to 9 Nov",
"conditional": "Which fare applies depends on the dates, which are not chosen.",
"source": "https://www.oeschinensee.ch/en/tarife-fahrplan/",
"checked": "2026-08-25"
},
{
"field": "cost.driving",
"status": "fact",
"value": [
119,
172
],
"currency": "CHF",
"unit": "Driving, there and back",
"multiplier": 2,
"variable": "Route-planner output of CHF 119–172 for one direction, counted twice. It varies with vehicle, fuel, route and toll choices.",
"source": "https://www.rome2rio.com/s/Antwerp/Kandersteg",
"checked": "2026-08-25"
},
{
"field": "choice",
"status": "our_choice",
"value": "Chalet Arva, a private en-suite double with a lake view, as the Saturday night — it is the option that meets the private-room and comfort requirement."
},
{
"field": "choice",
"status": "our_choice",
"value": "The easy lake paths as the default walking, not the 90-minute valley ascent and not the Heuberg/Oberbärgli or Fründenhütte routes."
},
{
"field": "choice",
"status": "our_choice",
"value": "Friday valley hotel plus Saturday mountain lodge plus Sunday return, rather than a hut-to-hut traverse."
},
{
"field": "verify",
"status": "must_verify",
"note": "Do not leave the car overnight at the Oeschinensee cable-car car park — it is for cable-car guests and only until 22:00. Premium parking is valid only until 20:00."
},
{
"field": "verify",
"status": "must_verify",
"note": "From 20 June to 20 September 2026 the uphill cable-car slot must be reserved in addition to holding a valid ticket."
},
{
"field": "verify",
"status": "must_verify",
"note": "Chalet Arva has no heating; the host can provide a hot-water bottle or an extra blanket."
},
{
"field": "verify",
"status": "must_verify",
"note": "Chalet Arva's opening days vary by month and the restaurant is closed on Mondays even in July and August."
},
{
"field": "verify",
"status": "must_verify",
"note": "Check the Oeschinensee live operating and route status 48 to 72 hours before departure."
}
],
"unresearched": [
"cost.hotel.valley",
"cost.room.arva",
"cost.dinner",
"cost.parking"
],
"blocks_total_cost": true,
"cost_total_rule": "A whole-trip total is published only when every cost component is sourced. Never a partial total, never 'from', never an estimated total.",
"itinerary": [
{
"day": 1,
"label": "Friday",
"title": "The drive down",
"activities": [
{
"label": "Drive Antwerp → Kandersteg",
"hours": [
7.5,
7.5
],
"status": "estimate",
"note": "728.5 km one way; route-planner guidance, not a live routing result.",
"source": "https://www.rome2rio.com/s/Antwerp/Kandersteg"
},
{
"label": "Check in to the Friday valley hotel",
"hours": null,
"status": "unresolved",
"note": "Required. The property is not selected yet."
},
{
"label": "Agree where the car stays on Saturday night",
"hours": null,
"status": "unresolved",
"note": "Must be confirmed before booking — the cable-car car park is not an overnight option."
}
]
},
{
"day": 2,
"label": "Saturday",
"title": "Up to the lake",
"activities": [
{
"label": "Cable car, Kandersteg → Oeschinensee",
"hours": null,
"status": "unresolved",
"note": "No published ride time. A ticket is required, and an uphill slot too between 20 June and 20 September.",
"source": "https://www.oeschinensee.ch/en/tarife-fahrplan/"
},
{
"label": "Walk mountain station → Lake Oeschinen, Trail C “Direttissima”",
"hours": [
0.33,
0.42
],
"status": "fact",
"note": "Broad gravel, partly paved, suitable even for strollers. Trail D, the Panorama Path, takes about 35 min instead.",
"source": "https://www.oeschinensee.ch/en/wandern/"
},
{
"label": "Check in to Chalet Arva",
"hours": null,
"status": "unresolved",
"note": "A private en-suite double is required; availability is unverified.",
"source": "https://www.arva-oeschinensee.ch/en/"
},
{
"label": "Lakeshore Trail K, if we want more",
"hours": 0.17,
"status": "fact",
"note": "About 10 minutes, suitable for strollers. An easy published option, not an obligation.",
"source": "https://www.oeschinensee.ch/en/wandern/"
},
{
"label": "Dinner at Chalet Arva",
"hours": null,
"status": "unresolved",
"note": "Confirmed available — a small menu of home-made dishes with meat and vegan options. The price is not sourced.",
"source": "https://www.oeschinen.ch/uebernachten/"
}
]
},
{
"day": 3,
"label": "Sunday",
"title": "Home, with the drive still to do",
"activities": [
{
"label": "Breakfast at Chalet Arva",
"hours": null,
"status": "unresolved",
"note": "Available. Whether it is included in the room price still has to be confirmed.",
"source": "https://www.oeschinen.ch/uebernachten/"
},
{
"label": "Walk lake → mountain station",
"hours": [
0.33,
0.5
],
"status": "fact",
"note": "The same easy route back. Published walking access; the shore is about 30 min from the station.",
"source": "https://www.oeschinensee.ch/en/wandern/"
},
{
"label": "Cable car down",
"hours": null,
"status": "unresolved",
"note": "No published ride time. A ticket is required.",
"source": "https://www.oeschinensee.ch/en/tarife-fahrplan/"
},
{
"label": "Recover the car",
"hours": null,
"status": "unresolved",
"note": "Parking or hotel custody must be confirmed in advance."
},
{
"label": "Drive Kandersteg → Antwerp",
"hours": [
7.5,
7.5
],
"status": "estimate",
"note": "The same route-planner guidance in reverse. This is what makes it a travel-heavy weekend.",
"source": "https://www.rome2rio.com/s/Antwerp/Kandersteg"
}
]
}
],
"recommendation": {
"form": "Friday valley hotel, Saturday in a private double at Chalet Arva, Sunday home.",
"why": "It meets the comfort and private-room goals: an en-suite double with a lake view, dinner and breakfast in-house, and an easy walk in from the cable car.",
"caveat": "Sunday carries the full return drive, so it is a travel-heavy weekend rather than a restful one.",
"better": "Take the Monday off, or add a second night in Kandersteg and drive back on Monday.",
"notA": "This is not a hut-to-hut hiking loop. It is a mountain-lodge overnight with easy lake walks."
},
"next_actions": [
"Supply the intended Friday to Sunday dates and a preferred season.",
"Query Chalet Arva's official booking page for one private double room, and note the precise room total, whether breakfast is included, the cancellation policy, and whether the restaurant serves on that Saturday night.",
"Choose a Kandersteg Friday hotel with written confirmation that the car may remain there during the Chalet Arva overnight, or source an overnight public parking alternative with its price and rules.",
"Book the correct two-adult return gondola tickets, and if travelling between 20 June and 20 September, reserve an uphill time slot as well.",
"Check the Oeschinensee live operating status and route status 48 to 72 hours before departure.",
"Keep the easy lake paths as the default; only choose higher mountain routes after checking conditions and fitness."
],
"itinerary_contract": "Every trip page uses this shape. Timings are rough and may be wrong. Fill day -> activities[] -> {label, hours, status}, or say why a day is empty. hours may be a number, a [min,max] range, or null when no figure is published - never invent one. status is fact (sourced timing), estimate (reasoned) or unresolved (something must be decided or booked first). Do not invent waking, breakfast or transfer time, and do not compute how full a day is - just list what we want to do and roughly how long it takes.",
"discovery_query": "Oeschinensee Kandersteg Chalet Arva mountain lodge overnight trip report"
}
