Easy to check in/out(always good when there's no hassle). On typing the building code, it wasn't clear to me that you need to press the key button, type the code, then press the key button again. Even though the message on AirBnB included key emoticons, I just confused them for random emoticons, rather than part of the code. Maybe that's just down to me being dense, but it can happen to others as well, since different intercom systems have different standards/conventions for entering the code.
Anyway, once in, there are instructions on how to use most of anything in one of the cupboards in the kitchen(oven, cooker, radiators, whatever), not that you'd really need it since everything is straightforward, but it's a nice thoughtful touch to keep that there.
The layout of the building is a bit weird. Even though everything is indicated on the walls(where to take the trash - bin store, where to store your bycicle, various flats, etc), it's a bit odd.
But 5 stars overall.