Theo met me when I arrived and explained everything well. He was available when we needed him during our stay as he lives next door but otherwise did not intrude. The apartment was clean and neat and comfortable to live in. It is on the first floor so there is one flight of stairs to climb. There was air conditioning and heating as well as double doors that can be opened up to let in the air and sunshine. The apartment is in a residential area, so you feel more like a local. There are bars, cafes and supermarkets of all sizes nearby. The apartment is not in the city centre so it it is quieter, and metro of Placa de Sants is very close so you can get to the attractions easily. There was some noise from the narrow street at night because Barcelonans go to bed late, but it was not a big problem. Sleeping in the room at the back was very quiet.
We loved our stay and would happily come back.