The apartment was clean and had everything we needed. The communication with the hosts was very quick and they even brought us a new coffee machine, after we found the first one broken on our arrival.
Unfortunately there was an unpleasant smell right from the beginning of our stay, which seemed to come from the corridor but we couldn’t see, where it originated from exactly. Another hassle was the leaking shower. Which made it obligatory to wipe the bathroom after every time of using it.
If you are looking to use the sofa permanently as a second bed, you should also know that the springs are really noisy and you can basically hear everything from the streets outside. Takes some nights getting used to. Or ear plugs ;)
Apart from that the location of the apartment was great for visiting Barcelona again.