Xavier was a lovely host. He provided lots of helpful information about the local area and Barcelona in general. He even drove us to the rental car office on our final day in Barcelona. The village of Gracia was a highlight of our 4 day visit. It had a slower pace than the rest of Barcelona and seemed more authentic. The Parc Guell is just a 10 minute walk from the apartment and is a must-see, with the Sangrada Familia 15 to 20 minute walk in the other direction and also amazing.
The apartment is quite small but very clean and modern. On the bottom floor of an apartment complex. It has a nice little outdoor terrace and is air conditioned which would be important in summer. We were a little surprised that the second bedroom was a fold-out couch but that might be because the description on airbnb was in Spanish. However we found it was fine for our stay of 4 days.