2 points to improve: 1) the wi-fi was averaging between inexistant (stopped working for 24 hours...) and horrible 2) providing only 3 sets of keys doesn't work, it was a hustle every time to coordinate between us 10....
Other than that.. AWESOME! Amazing location right where you want to be in Barcelona. Easy to communicate and responsive host. Great apartment for a group (10+) with 4 baths and many bedrooms. Great terrace.