Yes there's a shower also bath and mini bar, one advice I'd give is ask staff to find you a table at breakfast time otherwise you'll wait. Also when sightseeing use city sightseeing tour bus which our cities have. Otherwise you'll pay a lot more also cash machines can only be found in underground stations
the best way to get from Schoenefeld to Hotel Q! is by the RB5/RB14 to the Zoologischer Garten. There you've to change in the bus 109 (Direction Tegel Airport) to Bleibtreustraße. From there it's a walking distance from 3 minutes.
If you have any further questions, please don't hesitate to contact us.