A great place to stay for an interesting experience. I would not suggest more than one night. Don't expect to get much sleep. There is no way for sound to be muffled in a bunker so you can hear people in the hallways throughout the night. Bathroom facilities are minimal: no place to put anything. So carry your toothbrush to the bathroom with toothpaste already on it. If you plan to take a shower, there is not even a hook to hang a towel. A stay in the bunker is a bit like camping. However, the fun of staying in a bunker eclipses these details. You can explore the bunker and can even go on a tour of the bunker at no additional cost (its included in your stay) but the tour is only in Czech. There are so many nifty things to see throughout the bunker:
old rotary phones, jackets, gas masks, first aid kits, security doors, helmets, etc. There is wifi but I was unable to get a good connection in my room (the rooms are underground after all) but the breakfast room is close enough to the outside world and has great wifi. There are no outlets there though. I had so many outlets in my room, I could have charged a family's worth of toys, yet I was in a room with one bed. The bed is an original cot and although I did not sleep well, the cot was not uncomfortable. A sleeping bag is provided as the bedding and is all that is needed to keep you warm.