This hotel is very close to S-Bahn station Anhalter Bahnhof. And it's better decision to find hotel. Postdamer Platz is far from hotel: 2-3 bus stop or 1 S-Bahn stop or 15-20 min walk.
Near S-bahn there are 2-3 bars - you can drink beer till midnight and get most better and cheaper breackfast from 8a.m.
Room - Ibis standard.