Leonardo sent one of his friends (and he was on time) to give us the key, which was fine. We just needed a place with three beds for a night close to the train station. For that purpose it was ideal. You can hear some traffic as the street outside is pretty busy.
He had left towels, a small bottle of water in the fridge, and had coffee available - all things that are much appreciated when travelling and you want things to be easy upon arrival.
When we left, we just dropped off the key at a convenient place. Super easy.
Only drawback for this one is that the lights go out at times, so you have to flip all switches and then the light is back on.