Dealt with an unexpected issue but the owner fixed it quite fast. He was also very polite and spoke good english. In addition, the place is located very close to everything.
Tip for future visitors in Prague: Prague is generally easy to walk to. I bought the 3-day ticket for trams but barely use it. It is not really worth it. Plus, it is expensive. If you need to use trams or the metro, buy one or two one-use tickets, because you probably won't need more.