I have a question, are there stairs inside the roo...

I have a question, are there stairs inside the rooms that are assigned as a service area, on each floor? It is that in my stay I touched the last room before the bathroom, and two children came out, a girl of about 11 or 12 years old and another boy of about 9 or 10 years old, ... it seemed strange to me that they left that place of service, because once inside the room, my husband said, who entered the room a time after mine, that he also saw two children come out of the same bathroom ... that action bothered me a lot. ..