My stay in Generator was 3/5stars because i felt a kind of incorrect treatment for a hostel style establishment. Generator does not provide lockers for the rooms, they dont provide fridges for your own food, they dont provide a kitchen, not even a microwave or water heater for personal usage. The pingpong table is additional 2,50 EUR/hour. There are lockers that you could rent, with a rip-off policy. I rented a locker when i checked in at 3 pm for additional 5 EUR/24 h, which cannot be extended. The next day I woke up and the locker was still good until 3 pm, i could reopen it as often as i wish. I left the hostel at 5:30 am because I am an early bird and had my breakfast that i stored close to the window in the room for a little bit cooling effects in the metro station nearby since the policy does not allow you to eat your own food, even if the cafe and the breakfast area does only open after 7 am. Thanks for this great sensation of having my breakfast in the metro station. Then I returned to the hostel and checked my locker, it was 8 am when I left, and I needed the locker until 11 am next day. so I could not cancel my locker without losing 3 EUR for an additional 6 Hours rent, which was the minimum rate i could use. It would have been easily adjusted on the lockers, the friendly staff member told me, by adding 3 x Italian CA**O, that they could reprogram the lockers, but a rental that can be extended by 24 hours is not existing if you want to reopen and close the locker. i did not spend 48 hours in the hostel, but i had to pay the locker for 24+24+6 hours because i was not able to be at the hostel when the rental expired. 3 EUR win for the person who decided about the policy of the lockers, congratulations! When I told this to people in other hostels on my travel they were asking, how that could be possible? Otherwise the hostel was clean, and good design, spacy, but if you sleep early book somewhere else, the hostel makes party until midnight with LOUD music in the inner courtyard and most of the windows reach that courtyard and you hear the disco music until midnight, and you cannot close the windows because no ventilation is provided at the rooms. Even the bathrooms ventilation was deactivated by purpose, who knows why, bathroom did never dry, heating was not working in the rooms, the air at the reception made me caugh constanly, maybe some fungus inside the aircondition they use for the reception. I would definitely NOT RECOMMEND this hostel if you have an alternative, if you dont havem, you could give them your bucks and they will treat you like a CA**O... The beer was 4,50 EUR which was also the most expensive beer i had in Berlin. Many things this hostel could improve, but I bet the owner and manager who is reachable at berlinm aat generator website does not even reply to complains.