https://nominatim.openstreetmap.org/search?format=json&q=${encodeURIComponent(street + ", Rissen, Hamburg, Germany")}&addressdetails=1`

findet leider den Hummelstieg nicht.

Details:
const response = await fetch(url);
if (!response.ok) throw new Error("API nicht erreichbar");
const data = await response.json();

const validLocation = data.find(location => {
const addr = location.address;
return addr &&
(addr.suburb === "Rissen" || addr.city_district === "Rissen") &&
addr.road &&
addr.road.toLowerCase() === street.toLowerCase(); // Exakte Übereinstimmung
});