This part of the building is an open cooking and dishwashing area. It has tables on both sides (for cooking), a sink and a bench. I am mapping it as a Picknick shelter, because is is the best fit I know of. Please update, if there is a better way.

via StreetComplete_ee 61.1

Attached photo(s):
https://streetcomplete.app/p/318748.jpg

Unable to answer "What kind of service building is this?" – Translator Tower (Service Building) – way/362332786 via StreetComplete_ee 61.1:

There is a tower with lots of Antennae nearby. Seems to be some kind of telecommunication building, but probably not for connecting landlines.

Attached photo(s):
https://streetcomplete.app/p/319873.jpg

Unable to answer "In what orientation do cars park here?" – Street-side Parking – way/1163544806 via StreetComplete_ee 61.1:

On the seaside parking is diagonal, on the land side is is parallel

Attached photo(s):
https://streetcomplete.app/p/318578.jpg

There is a beach access (No. 12) here.

via StreetComplete_ee 61.1

Attached photo(s):
https://streetcomplete.app/p/318579.jpg

This path exists. Please map. Surface is grass.

via StreetComplete_ee 61.1

GPS Trace: @frickelhanse/traces/12130149

This path does not exist (any more?)

via StreetComplete_ee 61.1

Toilets are actually here. The building is missing on the map.

via StreetComplete_ee 61.1

Draw playground area and move playground elements to their exact position. Positions estimated based on GPS

via StreetComplete_ee 61.1

A building is missing here.

via StreetComplete_ee 61.1