We stayed at Adrià's apartment at the end of June.
Adrià is a kind, responsive host. The apartment itself was clean and located near a metro station that gives you a portal to nearly every section of the city. The neighborhood is great, and on our first night, we found a pizza spot nearby, where we ordered a delicious pie and two empanadas.
We loved our experience in Barcelona; We hope to visit the city again some day, and we'd definitely look to stay at Adrià's place.
We would be remiss if we didn't offer a PSA about the stairs. There are quite a few of them, as Adrià's apartment is essentially on the sixth (or maybe seventh?) floor. There's a lift, but it's not large enough to fit two people and two suitcases.