My girlfriend and myself were lucky enough to find Ana's flat in Barcelona. Ana and partner Moritz were not home over the weekend we were in Barcelona but had left the keys at a local cafe just 50 meters from the flat so it was really simple for us to check in and get settled. The flat was on the 3rd floor and there is a really cool old elevator to take if you don't want to use the stairs.
The flat was really clean with a separate bathroom for guests with plenty of soaps shampoos etc.
The locations of the flat is exerlent with only 15min walk to Sagrada Familia and 20 to La Rambla.
All and all we had an awesome stay and I will definitely try to stay there again next time I am in Barcelona.