Hotels are much cheaper outside of Prague.
Even the spas of Karlovy Vary and Marianbad are much cheaper than Prague. If you are driving around the Czech Republic, which we highly recommend, you will not need your car in Prague and it will probably cost you money to garage it. If you are returning by air from Prague, you might want to consider turning your car in when you arrive in Prague rather than keeping it until you return. We list a selection of hotels here. We strongly recommend you plan well ahead or you will have difficulty getting reservations.