The location is really nice. You can go to Place de Catalunya by bus directly and it takes 25mins. The bus stop is 1 mins walk from the appartement.
Xavier is very organized, he gave me all information I need and check-in/out was so smooth.
P.S.
For people who comes by car like us, there is a parking place 7 mins walk, it costs only 40euro for 6days or 7days. We used only for 3days though, I think it’s less expensive than parking in city center. We used the parking for security and we had no problem !