OTA-Berlin was a great place to stay if you want to get an idea of what it's like to live in the city's centre! My boyfriend and I stayed for a week and a half. It was the perfect place to rest up in between sightseeing! My only tip if you're going to stay here is to bring earplugs! The location is next to a nightclub on a main road that can be pretty noisy until late at night. Also, the noise from the hallway and upstairs is quite loud and travels through the building. Don't let that put you off too much though - We had a great time there though and the internet was really good. Highly recommend! (Also, if you're from the UK, bring your own teabags! they don't have that kind of tea available in Germany!)