The place is well located, easy reachable from the airport by metro. The flat is small, but the room was OK. The balcony is very nice. Pau was very welcoming and helpful. The location is a bit outside of the city, not crowded with tourists, and there are some very nice places in walking distance (Güell park and other nice spots). One very small thing: there was no cabinet so I had to store my clothes on the floor, it was OK for 2 nights, but not the most comfortable. Also, there are no locks on the doors (neither of them) so a mutual trust is important. ;)
The mattress was very comfortable. :)