We have stayed in the apartment for one week to work from and explore Barcelona in our free time. The check-in process was seamless and without any issues via What'sApp. The apartment is very spacious, clean and has an excellent location - while the street is rather busy the apartment is facing the inner courtyard, including the nice terrace. Although we have never met Gunnar, as a different person checked us in, communication with him was always easy and friendly and he took care of our request immediately. I'd recommend this apartment for your next trip to Barcelona.