I enjoyed a week-long stay here during the Primavera Sound Festival. The room was exactly as described. It's a tiny room with no windows, but Ezequiel was kind enough to provide a fan to help with air circulation. Had many late late nights during the festival (coming home when the sun was already up), so it was actually a blessing to not have any windows in the room. It was pitch black, even during the day, so i was able to sleep in until 2:00-3:00pm in the afternoon.
The rest of the apartment was clean & suited all my basic needs. I had access to the kitchen and refrigerator which was a big bonus. Ezequiel spoke limited English, but we were still able to communicate just fine. He recommended that I go see the sunset at the Bunkers del Carmel, which was probably one of the highlights of my trip. Gorgeous 360 degree views of the entire city, bring some wine & picnic & enjoy one of the most beautiful sunsets.
But really the greatest thing about this apartment is the LOCATION. It's on a very quiet street in centrally located gothic quarter, close to lots of cute restaurants, cafes, parks, etc. I rented a bike during my stay (which i highly recommend), but it's also very close to the metro line & buses. So while the room might not be the most luxurious, it definitely makes up for it with it's location. For travelers on a very tight-budget like i was, you really can't beat a place like this at this price. Highly Recommend!