Was there only space for one on the landing?
Seems a bit cruel though.
Unless they were just all on the floor and the bedroom door was open so the landing is just as extension of the room.
I can really easily see how this happened tbh. I'm embarrassed to admit, dd currently has two friends over for a birthday sleepover right now, and up until 2 hours ago, I gave it zero thought where I was going to put them. Wasn't malicious, just didn't think. There's only bunk beds in dds room, so they've all gone in to the double guest room bed.