The apartment was as described and nicely decorated and equipped.
We didn't hear from the hosts during our four night stay and were met by their sister on law- who was friendly enough. We paid 25 euros 'late fee,' because our train got in after 8pm. These were the only hosts to charge a late fee on this 8 stop trip. This can be a downside to airbnb, when your hosts are inflexible.
This apartment is quite adequate in size for three people and the lift was certainly appreciated. The bakery around the corner was a godsend. On the downside, the 2nd shower is too small to enjoy. The mattress of the master bedroom is uneven and uncomfortable. There was a problem with bad smells in the building. Also. If you want privacy in the master bedroom you have to sacrifice air-conditioning, as the split system doesn't extend to that room with the door closed. If was really hot!
Having said that, the location is good for the Sagrada familia and the wifi was great!