This is a great place, in a quiet and clean neighbourhoud close to Parc Guell. Great views over the city from this neighbourhood.
We stayed here for four nights, and found the apartment exactly as described and very clean.
A pleasant walk to the Vall d'Hebron metro station, we suggest using this station as it is quicker than using the El Coll - Teixonera station.
If you want you can be pretty self-sufficient, the apartment has a well-equiped kitchen. However, as there is so much to do in Barcelona, we only were at the appartment to sleep and take a shower in the morning.