We had a pleasent stay at Karlas resident. She was very helpful in regards of finding a cheap parking place nearby, she was easy to communicate with during the planning, and there were no problems getting the key, even though we arrived half an hour earlier than promised. We wasn't aware that it was more like a hostel, but the other guests were quiet, the room was fine and it was nice to have access to our own bathroom. The area is very cozy with its small shops, alleys, and markets, and I would definitely recommend anyone to stop by for a stroll when in Barcelona.