Josef’s place was fantastic to stay at for a week. It’s a stone’s throw away from the Old Town Square. There is enough available food and drink within a 3 minute walk that you could stay there for a week and try something new for each meal. The street noise can be a little loud at night since it is a main walking area, but there’s obviously nothing Josef can do about that.
I would definitely recommend it for anyone visiting Prague, be it for a week or a day.