We liked a lot our experiment in Barcelone. The flat is very well located. We did a lot of our routes just walking, and that was very pleasant.
Simona and her father were very discreet, such that we didn't see each other. It was easy to communicate by mail before and during our trip.
The room is small, clean enough, and the appartment provides the minimum comfort, but it was ok for us because we were a lot outside.