Oscar's apartment is incredible - truly your jaw will drop when you arrive. It is spacious, well decorated, comfortable, and has the best patio you could imagine. My wife, daughter, mother, and I had more than enough room for our 4 night stay.
The location is excellent as well - walking distance to just about everything you'd want to see in Barcelona.
Our only complaint is that we lost hot water for 1.5 days of the trip, but Oscar's assistant Jennifer tried to help remedy the situation.