I stayed at Marc's apartment in Barcelona for a few days. The location is just unbeatable, in one of my favorite neighborhoods of the city, charming and central, but isolated from the hordes of tourists. If you are looking for an authentic experience, in a "real" area of the city where the locals are still present, this is your place. The apartment is great, in an old building but entirely renovated. Beds are comfortable and you have all the amenities needed for your stay. Marc was very reactive and helpful. If I need to go to Barcelona again, this will be my first choice.