59 sq meter one room apartment, ideally situated between Kreuzberg, Friedrichhain and Mitte. Large and bright room, with a big and comfortable bed, a sofa, working space, Wi-Fi, kitchen with access to the garden, and a bathroom with bath tub.
No particular rules except for the ones you apply at your own place, I think. Watering the plants when you stay for more than 2 or 3 days, taking care of the neighbor's cat not to slip in and stay in the place (Moza is its name and she's terrible! :D ) Smoking is not allowed, but at the bottom end of the kitchen there is access to the garden with a small terrace where it is normally used for smoking in case you need to.
The internet is quite fast, and it's included in the price, although in Germany it's prohibited to download music, movies and other things that are not officially purchased online, and it's really monitored!
Other than that, not too loud music and noise, mind the neighbors, they are all amazing folks.