I had a great stay in Xavier's apartment. Xavier was quick to respond to queries with helpful advice and assistance, and Marcela who met me at check in was really welcoming and helpful. The flat is very comfortable and a restful place to stay, with some nice touches, such as the coffee machine, dishwasher and washing machine. The terrace is lovely too. There are supermarkets etc a short walk away and the nearest metro stop (Joanic) is easy to reach.
[A quick note for reference of future travellers: the second bedroom is created via a sliding door in the living room, and has another door which opens into the bathroom (ensuite to the master bedroom; as far as I could see the doors don't lock). So would be great for two close friends to share but trickier for people less well acquinted.]
I felt very safe in the flat. I was mostly based in Gracia during my stay and was happy walking around on my own in the evening, but would choose to get a cab home after about 10pm.
Thank you, Xavier, for a lovely stay.