The beautiful town of Liberec offers many opportunities for finding housing according to your own taste. Before you find your ideal new home, however, you may wish to use one of the short or midterm possibilities offered by the university's hotel Unihotel Liberec.
You can also ask your contact person in your department to assist you in securing accomodation in the university Halls of Residence. They have won the award for the Best Halls of the Year in 2014, 2013 and 2011.
The dormitories offer accommodation to other visitors to the university or town - http://letniubytovani.tul.cz/