Upon arriving at the flat, Sofia's mother (Sofia had an exam) explained everything to us and was very helpful. The flat is in a fantastic location (around 5 minutes walk to Les Ramblas), although be warned if you have large suitcases: there isn't a lift! We messaged Sofia a couple of days before, asking if it would be possible to leave our suitcases at the flat during our final day (as our flight back was quite late). There was no response to this, to which we sent many more messages to again she did not reply to. This is relevant because if we had an emergency situation, she wouldn't have replied (and communication is a vital part of being a good airbnb host). When she finally did reply through airbnb messenger, she seemed very aggressive and impolite, which was very unexpected. Despite this, the flat is great for a weekend stay and I'm sure from this experience she will improve her communication.