We very much enjoyed our stay in Trudy's apartment. She was quick to communicate and gave us lots of detailed information, as well as recommendations for the surrounding neighborhood, which was very fun and lively. (In the evenings, we mostly just walked to restaurants and beer gardens in this area, so really convenient.) It was also very close to a U-Bahn station (Bernauer Strasse), although for most destinations you had to transfer lines at another station. The bed was super comfortable, and the living area with the cosy couch and big TV were lovely to come back to after a full day of exploring the city. The apartment was also spotless. The kitchen served all of our needs, although there is no oven. The bathroom is a little small, if that's something that bothers you... Also, the upstairs neighbours were quite loud at times, but that's not something that is easily controlled of course. Overall, I would highly recommend this apartment for a long weekend in Berlin!