A decent enough local gym right by Frankfurter Allee S&U-Bahns. It's reasonably priced and has all…read morethe basic facilities, but don't expect luxury.
They charge EUR14 fortnightly, which works out to be about EUR60 per month, minimum 6 month contract.
The gym is set over 4 quite pokey floors - the ground floor has free weights and machines, the second floor cardio machines and wellness, the third changing rooms and the upper floor, studio for classes. This haphazard design means you have to go down a floor, naked, with a towel wrapped round you right in front of everyone on the exercise bikes to get to the sauna. Don't get me wrong, it doesn't bother me in the slightest - it's just poor planning and design.
Althought it's a nice enough gym and the staff do their best, in my opinion they have got some basic things wrong. For example, the stretching area is pathetic. Very few people stretch either, which leads me to believe that the instructors don't emphasise it - a bad sign.
Secondly, the free weights area is so cramped, that it becomes unworkable if there are more than 2 people training. There are no swiss or medicine balls, or other core training equipment.
The courses are quite limited, with only one pilates and no yoga classes.
One plus point is the large mixed sauna and relaxation area with roof terrace.
It's a good basic, cheap local option in the Friedrichshain area, which covers the basics, but don't expect a great deal.