We used the flat as a base for our 3 days of Berlin sight seeing.
We chose this location as it is on a border of the low emissions zone as we drive and didn't have the appropriate German sticker. The parking is free, although the area is very busy.
The U and S bahn are 2 mins away, which was just what we needed- we were spoiled for a choice of transport to Berlin sights.
Apart of this, the flat is very basic, but comfortable enough for few night stays, which was OK for our family.