Ulrike's apartment is extremely clean, cozy and comfortable, exactly what you want to come back to after a tiring day of touristing. It was a pleasure to stay there. Ulrike has definitely thought of everything that we could possibly need during our stay, down to the little chocolates to go with tea and coffee. The surrounding streets are quiet and we felt very safe walking up and down them (mostly to the nearby supermarket!) at night. The apartment is also well located near the train station which is just minutes into the city, and the train system (though looking slightly intimidating) was easy to navigate once you get used to it. Would definitely stay with Ulrike again next time we are in Berlin, no questions asked.