We spent 3 nights at Hotel Josef at the end of April. It was supposed to be 4 nights, but was told by the front desk upon arrival that they were having technical problems on certain floors and had to move us to a nearby hotel. The excuse they gave wasn't convincing. The hotel that they transferred us to was good overall, but not as great.
Our stay at Josef was very pleasant. Both the bedroom and bathroom were spacious. The welcoming fruit basket and bottle of champagne made our stay even more enjoyable. We made several room service requests and the staff were quick to respond. The thing we were most impressed with was their bathroom with the modern design (heated floor, heated towels). The buffet breakfast was plentiful and of good quality and the service was impeccable.
The hotel is in close proximity to major historic sites including Old Town Square, Charles Bridge and Prague Castle. Overall, we felt safe in the area.
We would certainly recommend Josef to all our friends.