Catalina and her parents were hugely helpful throughout the stay. They accommodated us dropping our bags off several hours early, and very helpfully provided a public transport card for BA as well as a large folder with all sorts of handy information. They further accommodated us with a late check-out since there was no guest due on that day, and arranged a taxi for us to the airport. It really was well above and beyond what we expected.
The apartment itself is very fairly represented by the pictures. It is a good sized studio with a well equipped kitchenette. The place was clean and tidy on arrival. Perhaps the only negative for me (being quite tall) is the shower cubicle being surrounded by a curtain which does cut into the space.
Overall, we enjoyed our stay here and would come again if we visit BA.