Fantastic large, remodeled apartment in the middle of the Barri Gotic. You could not ask for a better location with easy walking to many tourist sites and about 15 minutes to the start of the Barcelona beach. My family of 5 was very comfortable.
Bakery and meet/cheese shop directly across the street from the front door. Definitely skip the car rental until after your stay here because you will want to walk or take public transportation.