This apartment is very nice and the location is fantastic. HOWEVER the keys were electronic and did not work the last night, we tried to communicate with the host through the app and got no response for about 3 hours. I had to communicate with Airbnb because all of our stuff was inside and we had no where to sleep for the night. We got a response from the host after 3hours asking where we were and that they could get us a key, 2 hours later still no key. We spent about 5.5 hours back and forth and waiting, then Airbnb gives us a phone number of a security guard of the building that is not on site and who’s information was never initially provided to us. They come and provide us with new keys, I will note this happened on a Spanish holiday but there should always be someone available for emergencies like these for the guest. Apart from getting locked out for 5.5 hours our last night in Barcelona and the night before our flight it was an enjoyable apartment.