I stayed here for a week and it was perfect.
The room is fine for one person. The kitchen, bathroom and sitting room were all great too with a nice little balcony to look out over Rambla de Ravel.
Davide was an excellent host who always replied to my questions etc.
Finally (as somebody who lived in Barcelona in the past) I can say the location is excellent if you want to explore the city. Although, some people might find the ravel a bit 'wild' (not me, I love it!), the apartment is close to the main tourist areas and and the metro etc.
I would recommend it to anyone and would definitely stay there again.