Oliver's place is overall very good, I have nothing big enough that I could complain about. All the basic amenities that you could wish for. Oliver is a very nice, respectful, and hospitable man. In the limited time that I spent there(I only really spent the night there) I was fairly satisfied and happy that I chose to stay at Oliver's place.
However, the one thing about the place is that it is located a little bit far from the city centre but it is located very close to the one of the main metro lines in Barcelona which will get you downtown(30mins each way), so expect to make at least 2 journeys back and forth by metro each day