About floating stairs
These are actually stairs that do not have a structural support underneath them. The name comes purely from the looks of them.
Advantages
This type of stairs adds a lot to the design of any room.
Drawbacks
Because these stairs have empty space underneath and between the steps, there is a chance for injury. You can always get your foot caught between the steps if you are not careful. They are particularly unsafe for old people and children, especially that sometimes the stairs also don’t have handrails.