Shortly after the state of Emergency was declared on March 12, 2020, hotels in the Czech Republic were asked to close to prevent coronavirus from spreading. As per the latest news these should now be able to reopen from May 25.

Given the restrictions that are still in place throughout Europe, the largest hotels may not reopen as early as end of May, but domestic tourism is expected to resume from this date.
Though as the local authorities have started discussing with neighbouring countries we can expect more and more EU citizens to be able to enter the country as tourists as early as this summer.