The location was perfect, right on the Passeig de Gràcia. 15 min walk to Plaça de Catalunya. The clubs were a bit further, €10 in a taxi.
The place was clean and the room was nice. Although the fan in our room didn't work, but we were able to swap it. The shower didn't have a curtain so when we had a shower the bathroom got very wet.
The road outside is quite busy and noisy. So I would advise to bring some earplugs if you are a light sleeper.
Karla showed us around the flat, but wasn't very welcoming as she didn't speak much English. Communication was difficult.