the internet connection is not good. if the person uses it a lot in the room, it may be not suitable to him/her.
also long period stay may be considered. the rooms (there are 2 rooms and the each for one person) are tiny. one is dark and out side of the window is stairs where the people are up and down. if open the curtain, inside of the room will be visible. however if it`s kept shut, no breeze come through, needed to open the room entrance door which has no key and not shut completely.
there may be the limitation to use the common spaces or the facilities which are in kitchen.
however if you can be a good friend with the host, your stay will be not bad. and will enjoy the nice view of Sagrada Familia everyday and night from the window of one of 2 rooms.