We loved this apartment for our honeymoon exploration of Barcelona. The deck is perfect for lazy afternoon nap/wine and you have everything from laundry to dishwasher to enjoy a long stay.
It's a short block away from subway and is right next to a street with cafes and shopping. We enjoyed the small curvy streets of Gracia full of small businesses without the craziness of La Rambla. It took us about 5 minutes by subway to get to Placa Catalunya for tour bus trips and less than 10 minutes to our cooking class in old town.
The host has met us for a very late arrival (2am) at the apartment, that was very welcome after a delayed flight.