In context of overlay "Buildings" – Apartment Building – way/255555426 via StreetComplete 61.3:

This house is multiple residential buildings with multiple entrances, hence the multiple building numbers.

In context of overlay "Buildings" – house number 1,3,5,7,9,11: Apartment Building – way/255555424 via StreetComplete 61.3:

This house is multiple residential buildings with multiple entrances, hence the multiple building numbers.

In context of overlay "Buildings" – house number 23,25,27,29,31,33: Apartment Building – way/255555423 via StreetComplete 61.3:

This house is multiple residential buildings with multiple entrances, hence the multiple building numbers.

Unable to answer "What’s the surface here?" – Foot Path – way/1448442493 via StreetComplete 61.3:

This pathway does not exist, the playground is in the middle of this square. The pathway goes around the playground.

Attached photo(s):
https://streetcomplete.app/p/315233.jpg

Unable to answer "Which direction leads upwards here?" – Steps – way/1122071164 via StreetComplete 61.3:

It goes both ways.

Unable to answer "Is there tactile paving on this curb here?" – Lowered Curb – node/12175234049 via StreetComplete 61.3:

There is some tactile markings in the ground, but they cover only a part of the entire crossing. I would say about half.