If you stay at Arnd place, you will get everything you need. Sanitary was perfect, super clean and had everything you can expect. Breakfast is perfect. Sleeping room is ok. You get your own refrigerator and coffee. You get your own keys and can walk in and out as you want. In de direct vicinity you will find public transport, bicycle renting place, restaurants etc. This place also is very near the city center. I loved it. This was not my first visit to Berlin and I will, next time certainly go to the same place.