Don't even consider staying with them.
We took ap. 2, dante house, and it was bad all the way:
1. they charged us 120 zloty for 90 minutes early check in. Self check in!!
And we had to pay in cash.
It's OK to charge something, but this is way too much, for just a phone call.
2. The bed is something between disaster and catastrophe. It was so soft that you can feel the big valley in the middle - impossible to sleep on it.
3. Windows in the sleeping room are without shade - you get morning light at 05:00.
4. The shower looks great, but you have to put your soap on the floor...
The good things: close to old town, very large, equipped kitchen, easy check in.
BOTTOM LINE: GOOD IDEA - VERY, VERY POOR RESULT.