A really good hostel! Clean spaces and very friendly staff. The building is also really nice from the inside, with the authentic factory hall. Within around 10 minutes you are at Alexanderplatz.
Because berlin is super big, it is recommended to rent a bike. Some restaurants are also renting bikes for around 13 euro a day, so keep your eyes open! ;)
Definitely worth for the price, i would stay in Singer Hostel again!