Nice Place, nice Neighborhood, Gracia is a Great quarter!
We were lucky to experience the "Festa Major de Gràcia"..... Event though one has to be aware that this then is not likely to be a pure recreational period in Summer... If you prefer that instead, it is better to take a finca somewhere else. :-)
If you want to discover the great City of Barcelona; this apartment is a great place to start with.
Alex is a friendly and helpful host; trying to help wherever he can.
Check out Alex's list of recommendations; worked great for us.
Ellen-Jakob-Christian (Frankfurt/ Germany)