My husband and I booked a room a year in advance and confirmed the reservation before we arrived, asking for a room with a balcony and noting that we were two people but would pay for whatever size room it took to have a balcony. When we arrived we were given a cramped, expensive room for four with no balcony and told that one could not reserve specific types of rooms! They did move us after the first night (although we were charged as if we spent the week in the larger room we did not want), but we had to vacate the first room by eleven and were not allowed into the new room until mid-afternoon. The rooftop pool area was not a terrible place to wait with our luggage, but we went to Barcelona to see the city, not the inside of the hotel, Also, although the balcony we finally got was lovely (with an amazing view), the shutters were closed by the maid -- although we asked in Spanish, English, and using the card one puts on one's door that the balcony door not be shuttered -- and got stuck. So we spent another half day waiting for someone to come fix the shutter allowing us to sit on the balcony. Finally, the stove did not work (using it tripped the circuit breaker). Oh yes: the maid came in daily and turned off the electricity, which meant the refrigerator in which we kept food was endangered. Again, repeated efforts to have this stop yielded nothing.
The little grocery store downstairs was nice, as was the location and access to the metro; it was also quiet. However, we would not stay at the Aparthotel Bertran again, simply because we spent so much time dealing with getting a room, a balcony, and a working stove (eventually we did get one of two burners to work) -- time we would rather have spent seeing the city.