Good and clean apartment, would stay again.

Nicely located , a five minute walk from the Belevue S-Bahn station, and a short 25 minute walk from the Brandenburger Tor and Reichstag, 35 minutes walk from the Ku'dam.
The whole of Berlin is in reach within a few stops or short walk.

3 sets of keys, so we could split up when we wanted to, excellent.

Supermarket nearby (5 minutes), so you can stock the fridge for your breakfast (which was already pre-filled it's some beers and bratwurst upon arrival)

Checking was hassle free, and we could checkout anytime we wanted, which was great because of an evening flight out.