My girlfriend and I spent four nights at Cristina's apartment with friends.
I would highly recommend this place to stay.
The bedrooms and bathrooms are spacious and private being at opposite ends of the apartment. The outside space is a great place to chill and hangout.

The neighbourhood has lots of local bars and restaurants to choose from, and the market just round the corner from the apartment offers lots of local produce.
The metro is only a 10 minute walk away although we didn't find it hard to find taxis either.
Check out the coffee shop up the street from the apartment - best iced coffee in Barcelona.... look for the Harry Potter ⚡️☕️lightning bolt!