We were greatly disappointed with the flat and forced to leave 5 days earlier.
The airconditioning made unbearable noises every 10 or 15 minutes making it impossible for us to sleep. The first two days we had problems with the noises coming out of the fridge, too. After making a complaint to the host they just pretended that everything seems to be working fine - no action taken.
The beds and pillows were extremely uncomfortable - ones of the worst we have had to experience. The bathroom is very small and uncomfortable. The staircase to the flat is super tiny - very difficult to lift your luggage as the flat is on the top floor.
I recommend to avoid this flat given our deep disappointment and ruined experience in Barcelona.