We stayed 2 nights with Merce. The apartment was located in a quiet neighborhood with many small restaurants around. It also has a big supermarket just round the corner. It was quiet and peaceful at night as it faces an inner courtyard.
We were happy to be able to get an early check in at 11am instead of the usual 2 pm. However when we reached and rang the intercom nobody answered. We also called both Dani and Merce but there was also no answer. We had to wait outside for about 20 mins, thereafter Vincen let us in. He then told us that the intercom wasn't working and that he needed time to clean the room ( subsequently Dani and Merce also responded ). We had to check in at 1230 instead.
The rooms was clean at first glance but we found light brown stains on our bath towels. The bathtub was also not completely clean. Also the kitchen smelled slightly of a backpackers.
Vincen was nice enough to show us around the house. But due to the language barrier was not able to share with us the sights or foodie places around Barcelona or the area.
Overall, the stay was pleasant but we expected more as the other reviews had glowing comments of this airbnb.