Yes. HUSH lists 2 adults-only houses in Czechia, each one with a minimum age of 18 written into its own house rules. They include Tosca – vinný sklep, Resort Lesní Lázně.

The 2 Czechia houses on HUSH are in Prušánky, Zvánovice.

One thing only: the house rules set a minimum age of 18 or higher — the rules a guest agrees to at check-in, whether they are on the hotel's own site or on its booking profile. It is not the booking site's adults-only tick-box, which the hotel sets itself, and it has nothing to do with adult content. Each page quotes the sentence and says where we read it.