I can't recommend Josef's airbnb enough. It's a prime location situated very close to Old Time Square/Astronomical clock and also close to grocery and fantastic food options within 2 blocks (Lokál, Naše maso, Cukrář Skála v Dlouhé). The airbnb was clean and very spacious for 2. We loved that it was a proper apt rather than a suite/just a bedroom. The tall ceilings and large windows makes the apt much bigger. The AC in the bedroom was great during the summer after a long day of exploring. The building's amenities are better than most hotels. The 24-hr reception was very helpful/friendly and Josef was incredibly easy to communicate with. We had only booked 5 nights but after another week we were back in Prague & reached out to Josef if we can park our car rental for one night at the airbnb's (very secured) garage. Josef was fast to respond and was wonderfully accommodating 6 days after our checkout. A bonus: the cafe bistro attached to the building has the best coffee and so convenient as a breakfast option - service was super friendly too. Josef has several airbnbs in the building and if our airbn experience is any indication, you can't find a better stay and host in Prague.