My two friends and I have just come home from a very enjoyable three night stay at Sito, Habitat Apartments. The apartment had ample space for us and everything we required for a city break.
The apartment is near to a supermarket, cafe, bars which were all useful for us. It was about a 30 minute walk from the more central part of barcelona.
It was a really enjoyable stay overall. We could hear other residents in the same building, however this didn't disturb us too much.
It was a very comfortable, enjoyable experience staying here.