The apartment is very nice and well equipped, there’s even a washing machine and a dryer. The location is amazing, right outside of the train from the airport and in the middle of everything. Close to bars, parties, shopping. In the middle between parc Güell, the beach and the sagrada familia The third bedroom is too small for someone to really stay in.
The apartment is on the 6th floor and there’s a lift that goes up to the fifth and then you need to climb one floor using the stairs.
The key is electronic so you better have internet and in case it doesn’t work you need to call an emergency number so better be able to make phone calls (and it’s written on the front door not the building entrance so copy that). Though I must say it is convenient that you don’t need to have keys and you can share the keys among the people who stay with you