Methodology
How this will work, and why it doesn't yet
Sundwise's premise is a Copenhagen location score built from measurable transit, walking, arrival-cost, evening-density and quiet indicators -- not opinion. Right now, that score doesn't exist. Here's the actual state, and the definitions it will use once it does.
Nothing is scored until the evidence gate passes
A property enters scoring only once it has a verified official address, coordinates, a source reference, and a passing manual check against Rejseplanen's own published timetables. As of this page's last update, zero properties meet that bar -- the dataset behind any future score is still candidates-only. Nothing here is a ranking, a booking recommendation, or a factual travel-time claim about a specific property.
The five metrics, once verified
| Metric | Definition |
|---|---|
| Transit Reach | Harmonic mean of 15/30/45-minute transit-reachable zones at Tuesday 09:00 and Saturday 23:00, calibrated against GTFS schedules. |
| Walk Core | Average street-network walking minutes to ten core cultural sights (Tivoli, Nyhavn, Strøget, Rosenborg, Amalienborg, Torvehallerne, Glyptoteket, Christiansborg, Round Tower, Botanical Gardens). |
| Arrival Cost | Combined transit time and cost from Copenhagen Airport (CPH) and København H. |
| Evening Density | Density of venues open past 21:00 within a 500m walking radius, verified against OpenStreetMap. |
| Quiet Proxy | An acoustic baseline estimate from road class, rail proximity and nightlife density -- explicitly a proxy, not a measurement. |
Scoring never touches commercial links
No score, weight, or ranking is allowed to import or reference anything commercial -- affiliate links, the paid data product, or any future checkout flow. This isn't a policy statement; it's a failing automated test that runs on every change to this site (scripts/test-commerce-isolation.mjs), inherited from an adversarial review of the original prototype design: "you say commission never touches the score, but how do we know marketing won't override it?" The answer is that the two are structurally incapable of importing from each other, and CI checks that on every commit.
Where the data comes from
OpenStreetMap (ODbL) for the map and venue layer, Rejseplanen Labs GTFS for transit (application pending), and Dataforsyningen/DAR for verified addresses. Every dataset ships with a manifest recording its source, retrieval date, and a hash, under data/snapshots/<dataset>/<date>/manifest.json. The Copenhagen Card calculator's data is a direct, hash-verified cross-reference from Sundwise's sister site, NordGuide -- see its own manifest for details.
Sundwise is an FA Ventures project, run alongside NordGuide.