This apartment is clean and compact. It is in a building that feels much more like a hotel than a classic air bnb accommodation. The size of the 'apartment' is the same as a small hotel room, it has key card entry etc.
The place is immaculately clean and very easy to check in to but it does feel impersonal and clinical.
The kitchen is well stocked and the nespresso machine is a nice touch. We only used the coffee machine though, it's hard to imagine being able to comfortably cook so close to your bed!
The area is a business district and quite souless. It has all of the amenities you would need but is distinctly lacking in character. The tram and S-Bahn stops are very close making it easy to get to Alexanderplatz, but it is quite a distance from the more interesting, unique and lively parts of Berlin.
In summary it is reliable, simple accommodation that feels like a hotel, for the same price as a hotel.