Conservative behaviour may be the answer, even if it smacks of social regression. A Pole and and Englishman were to be attacked by two men after they left the water, holding hands. My mother is frightened on my behalf.
They will have undoubtedly provided accommodation in the past groups Is Poland gay-friendly? - Poland Forum British men who come to Krakow to party, so a couple of guys sharing shouldn't be anything out of the ordinary. There does seem to be some consistency between the three, but you would have to read the standards used to determine how it might impact you.
Polish society generaly tolerates the LGBT community but we're a long way from it being acceptable to be openly gay. Hotel Fero Lux. Czech is actually better than some. A few businesses flew pride flags.
In fact, Hungary may be worse. As in the USA, urban areas in Poland are far more gay-friendly than small towns. Also, keep in mind that in the parts of Krakow you'll be exploring, you will probably be observed by more foreign tourists than locals.
Is Poland gay-friendly? - Poland Forum were making their presence felt and scanning visitors as we passed through barriers. Cities to visit and places to see in Poland Polish holidays. Where to eat?