Stan - We loved our stay at your apartment in Barcelona. The place was exactly as stated and 5 minutes to the Game of Thrones museum which my boys loved immensely. My wife and 4 other children (ages 25-19) went to meet our daughter who was studying abroad (from Elon University, North Carolina - USA) and had a wonderful experience.
We did a day trip to Montesarrat for a wine tour set up by Castle Experience which was outstanding! Our guide Alex was extremely friendly and knowledgable about his wines. I recommend a private tour if you are a group of 7. His colleague Victor had to handle a slight reservation problem on the morning of the Wine Tour (so we highly recommend you do not try and book the night before) but in the end it all worked out to our satisfaction. We even met the owner of the vinedyard Frank, who spoke to us for over 10 minutes on his expectations of his vineyard and answered any questions we had.
All the Gaudi attractions were excellent and highly recommend you getting the audio portion for your guide.
Park Gaulle was fabulous!
The tapas food and paella's were outstanding everywhere we went. We also ate a fine Italian place called Luigi's outstanding pastas and vino.
We had an excellent time and hope to be back again!!
Enjoy Barcelona!