Don't get too excited about the sauna, you wont need it as the WHOLE apartment IS a sauna!! Even their technician couldn't figure out how to work the air conditioning.
We clearly stated there would be 4 single people staying but only 2 beds were made up. We asked for more bed linen but only recieved enough for 1 bed.
Having complained about the heat, the dirty walls, bits of wood coming away from posts.... etc, we gave up! We wanted to get out into Praha, not sit arou d messaging re the state of the apartment.
Also the blinds ( which were held together with staples) didnt keep out any of the light..... not great in a loft apartment.
I have rented out my own home on airbnb ( so know the standards and presentation that is expected and required) and i have stayed in quite a few airbnbs around europe and this was most definitely the worst!