The prices of accommodation vary considerably according to size, occupancy, quality and location. It is not difficult to find private accommodation in our university cities. For a 2-bedroom flat (two rooms and kitchen) situated in the centre of Prague you can pay about CZK 12,000 – 17,000. It can be half as expensive in Pilsen and Hradec Králové.
However, please take into account that it is not so easy to find short-term rentals. Not all landlords are willing to sign tenancy agreements for less than 12 months, but many agencies are providing living units for a short stay (renting a room - pronájem pokoje / renting an apartment - pronájem bytu).