Überall in den Seitenstrassen

Hi there is a multi entertainment plaza with cinema etc open very day with restaurants too. the Platz is also a major stop fir all the hop on hop off bus tours so you could jump on one of those. You are not far from other areas of the city including the opera halls and concert are also. the museums open so you could visit one of those. the underground has a stop here so its easy to journey across the city

While not answering your question directly I can say we stayed right near Check Point Charlie and really liked that location. Personally I don't think you need that class of accommodation in the very modern city of Berlin.

UBahn o Spahn o autobus o taxi... c'è solo l'imbarazzo della scelta..... consiglio il biglietto cumulativo di più giorni

the best is Ritz Carlton.

yes there is. I can't include a URL here but if you google potsdammer laundromat you should find them... Good luck.