das ist kein Haus, sondern ein Privatparkplatz (Betonfläche)
this is a private Parking lot (concrete), not a building

via StreetComplete 13.0

There is no pond here anymore, only an old empty small pool nearby

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Attached photo(s):
https://westnordost.de/p/5452.jpg

Unable to answer "What is the name of this place? (Christian Church)" for way/50957325 via StreetComplete 13.0:

in this very small (formerly?) church / chapell is a Kiosk, so i wouldnt consider it a church now.

Unable to answer "Is it restricted who may park here?" for way/288109162 via StreetComplete 14.1:

Parkverbotszone, parken nur an gekennzeichneten Parkplätzen erlaubt - hier gibt es kein Parkplatzschild!

Kundenparkplatz

via StreetComplete 15.0

Privatparkplatz

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Now there is a street (looking different to the others), but its not used by routing. This Street is the Main Street to use. Driveing like in the image is not able. This Street are more like driveways.

via StreetComplete 13.0

Attached photo(s):
https://westnordost.de/p/5540.jpg

Die Ladesäule ist ungefähr hier.

via StreetComplete 14.1

Here is a street around the corner. Die Straße geht mit den Schienen um die Kurve.

via StreetComplete 13.0