We were a group of 9 staying over the Labor Day weekend. There was sufficient space for all of us and everybody was very satisfied with the apartment. It looks just as nice as on the pictures and is very spacious.
The area is fine, there are some bars and restaurants but we didn't have time to explore it in detail. Also bus and subway stations are very close by.
In general everything around the apartment simply worked out and that made our trip nice and relaxed. So if you are looking for a nice place with no trouble I can highly recommend Hans&Helens apartment.