It is absolutely not safe for kids. There's a steep spiral staircase with an ineffective banister that you must climb to get in or go from the bedrooms to anywhere else in the apartment.
There are tons of things kids can pull on and hurt themselves with.
There were rusty nails sticking out of the countertop 1m off the ground, perfect for a child to cut themselves on.
I left early because it was so unsafe. The host refused to refund me even though they listing says it's good for families with children and it is actually a death trap for children.