Many nonrev’s look to save money when traveling. One way to do that is to avoid the 5 star hotel, even te 3 star hotel and stay in a hostel.
Hostels are popular with the young backpacking crowd but they can work for anyone, if you know what to expect.
Berlin is a city loaded with hostels and we found an article from the Telegraph in the UK listing the best hostels in Berlin.
This is not the local YMCA. The hostels they list in this article offer you rooftop bars, good-value restaurants, clean, well-equipped rooms, en-suite bathrooms, and private bedrooms with televisions depending on the hostel and the prices are very reasonable.