Elena's place was a great home base for us to explore Barcelona!
The apartment was clean and orderly and had everything we needed. It is relatively basic, and was understandably a little cold in February, but generally felt cozy and welcoming. The bed was very comfortable, and the shower was good. Since it was cold, we kept the windows closed, and one consequence was that the bathroom smelled a little moldy.
We were traveling with our toddler, and the space was well suited for her. Elena even provided us with a toddler bed, which saved us the effort of having to bring one ourselves.
Communication with Elena was always fast and easy.
The location is great - very close to Diagonal Metro station and easy walking distance to the center of Gràcia, to Casa Mila, etc.