Due to severe cellular network lag here, made very little updates. Adding additional images for future area update. Parking lot has 14 spots total of which one spot is accessible parking spot. Free parking.
Unable to answer "What kind of building is this?" – Building – way/443465159 via StreetComplete 61.1:
A service building. Substation.
Small booth on the left is also service building intendes for "last mile of broadband internet". On the right side, toward apothecary, is a half underground service building what looks like a geothermal pumpstation.
These paths here are not lit at some hours of night. Tonight, 24.07.2025 at 23:52 GMT+2 (Polish local time), they were not lit. Only the main path going from parking lot that leads to waterlock and from it onward, is lit.
Might have been a parking lot previously but aerophoto show markings of a bus stop. www.peatus.ee also shows here a bus stop named Mähe. This also is observed on www.transport.tallinn.ee
Added bus stop here but left parking lot intact incase this area is multipurpose and is marked appropriately with signs on site.