Had an excellent experience at Carlo's place. I spent two nights there, and really enjoyed my stay. The house had a very homely feel to it. The room was really neat and clean, bed was comfortable, bedding was fresh and the bathroom was excellent.
The house is centrally located and is walking distance from Park Guell and Sagrada Familia, and also the metro and bus stops, making it an ideal place to stay.
The best thing was the hospitality of the hosts. Both Carlo and Dani are really warm and welcoming people. They helped us out with so many things like precise directions to arrive to their home, which metro pass to use in Barcelona, landmarks to visit, suggested us restaurants to eat in, local delicacies to eat.
I would love to visit again !