Easy and well thought out access, lockers to leave your luggage in for early check in/late check out, very clean, and peaceful at night.
Spotlessly clean room and bedding although the room had a stale smell from someone having smoked in there.
This is a huge place and if you are on the third floor can be a bit of a rabbit Warren of endless corridors but touchpad doors keep it feeling secure
Great local neighbourhood for food and coffee and easy access to stations to get around berlin and to the airport, and strong WiFi