Simonas place is wonderful! I stayed here for 2 months while working in Berlin. The house was spotless when I first arrived, and it's very well stocked with everything you'd need. It's nicely decorated, and it feels like a home. The location is close the the main train station if you want to travel somewhere, and the U bahn into the city is close, although I always walked to places like museum island and brandenburg Tor. Simona is also a great host, and would periodically message just to make sure everything was alright. I'd highly recommend this place!