Although I communicated with Valentina by chat and text, and she was very helpful, I never met her. The place was indeed, as I needed, very close to the airport (walkable), and there was also a bus at 4:55 am that suited me just right.
Everything was in order, but I must say I am not too fond of airbnbs that are, like this one, more like hotels - in fact this one is also a hotel. The original idea of airbnb is sharing someone's home, the someone often being a traveller too, where there can be a true social aspect to the experience. That was missing here as it was with my experience in Dunedin, New Zealand, a few weeks ago.