Frederic's place was awesome for a week-long stay in Barcelona. The description online was very accurate, Frederic was very responsive, and the apartment had all the amenities that we needed (except a hair dryer). The location was the best; the apartment is a 10-minute walk from Placa d'Espana which is one of the main transportation hubs in the city.
The toilet did not flush one night because of low water pressure and Frederic fixed it within a day. Neighbors smoked day and night, and the cigarette smoke odor filled the master bedroom even though all windows were closed. Because of this, my friend who initially stayed in that room slept in the living room for the remaining three nights. The apartment, like most old apartments in Europe, was pretty cold at night. We did not keep the heater on when we slept because of the smell from the heater. Luckily, there were enough comforters in the apartment to keep us warm. From my previous experience in Europe, I know these small problems are very common anywhere in Europe. Overall, I was satisfied with my stay and highly recommend Frederic's place.