Gust as a host is great! He was easy to communicate with, very responsive, friendly, he explained everything and was flexible with time. And his place is perfect if you want to stay in Barcelona. The flat was clean, comfortable and cosy, everything I needed was there. The neighbourhood is also and advantage - great location, close to metro station, shops, restaurants. I was lucky that I had a chance to stay at Gust's place and I would definitely like to recommend this host :)