Are these three islets really separate?

Unable to answer "What sport is played here?" – Sport Pitch – way/536290925 via StreetComplete 61.0:

It's a parking lot nowadays

What's this complex here?

What's this place? Looks weird in aerial imagery.

There should be a teahouse called "Teetao" somewhere in this building. I wonder where is it exactly? Has it replaced some of the POIs currently in the map?

Source: https://www.teetao.fi

Unable to answer "What’s the name of this street?" – Minor/Unclassified Road – way/1299933109 via StreetComplete 58.1:

There are two names pointing in that direction.

Attached photo(s):
https://westnordost.de/p/223044.jpg

Is the name of this island Kurkisaari or Hietasaari? The data is ambiguous.

Is there really water in between the islets here? Doesn't look like it in the aerial imagery.

Is this a pier connecting to the islet? Visible in aerial imagery.