Although Aleks was a great and communicative host - thank you for that - I think it was a case of missed expectations. This apartment is great, if you are 10-12 friends going to Berlin for a rave, festival, etc., and are not planning to spend much time at the apartment.
The apartment is very rough and does not have any functions besides sleeping. It is not built by professionals and made only to accommodate as many people as possible - many extra rooms have bee put up. That is great if that is your main purpose - to sleep and spend time in Berlin.
We, however, came as a family. We needed a functioning kitchen, a floor that children could play on, etc. For that price, we would have chosen something else - the price only makes sense, if you calculate it per sleeping space.
It is a true, rough, Berlin-experience. Charming as that can be. The neighbor is an experimental music club, the building is a warehouse, ​and everything is as you'd imagine in a movie about Berlin. If I had visited with my mates 15 years ago, I probably would've loved it more.