We stayed at Lucía's apartment for 3 nights and there was 4 of us. Plenty of room For us.
Lucía wasn't there to meet us however her friend did who was very knowledgable and helpful. Although we couldnt check in until 4pm because the apartment was being cleaned Lucia arranged for us to leave the luggage early, which freed us up to explore.
The apartment is in a great location, you can walk everywhere or there are 2 tube stops close by. The area is trendy with lots of different bars, restaurants and independent shops.
Lucía's apartment is on the 2floor but this is actually the 4th floor, no ploblem though as there was a lift. The apartment has some beautiful features, and is very spacious with everything you would need to a short or long stay.
Lucía was a great host (by message) and recommended somewhere to eat, unfortunately we didn't get chance, although we did find a great place for breakfast, federal cafe, only 5 mins walk.
Next time I'm in Barcelona I would love to stay at Lucía's apartment again.