The room was small and lovely, and the staff we met was wonderful, polite, and friendly.
However, there were some small drawbacks we encountered. There was a noticeable smoke aroma in the room. Even though it's forbidden to smoke in the rooms, I believe some previous guests might have smoked there anyway.
Also, we did not get the same room that was in the pictures. It had the same furniture, but it was arranged different; f.ex. the TV was not in front of the bed, but on the left, and there was also no window in the bathroom wall that you see in the pictures. It's not a huge issue, but it's not exactly what we expected.
There was no salt, pepper, oil, or iron in the room, even though it was indicated in the description. When approached staff, they kindly gave us a box of salt but mentioned that they do not normally provide these extras as the rooms are usually used for long-term rentals.
Overall, if you're looking for a cool, nice place to sleep and shower when you're in Berlin, it's perfect. Nevertheless, if you're also looking to cook during your short-term stay, you'll have to buy your own salt, pepper, oil, etc. And if you want to use the washing machine, keep in mind it costs 3 eur and you need to bring your own washing liquid.