Diana's place is excellent! What a great find. I was staying in a hostel before this and the other people were driving me crazy, Diana's place is the perfect balance of privacy and value. Shared bathroom and kitchen but the other guests were very easy to get along with. My room was excellent, two beds, table for work, dresser/wardrobe, and FAST INTERNET! Perfect for me as a remote worker.
During the day it's a 5 minute walk to the nearest bus stop, late at night when busses aren't running it's about a 15 minute walk to the nearest train/subway. It does take 45min to an hour to go to most places in Berlin proper, but it's easy and cheap with the great public transit here.
There's also a shopping center with groceries and a ton of other stuff about 10 minute walk away!