My daycare is my main floor but there are two big huge stairs to go up into my living room, it's a big old house with lots of charm but those two big steps are crazy. The children learn to go up and down by the time they are 14-16 months of age I guess. But I don't have to worry about a whole flight of stairs.

I do have a baby gate there for new little ones under a year old but when I close it they all cry, even the ones who have been here over a year, grrrrrrr, so they have to learn the stairs. I wouldn't be able to leave the gate open if it were a whole flight.