I live with my parents and nana with my DC. It's a fairly recent thing, so I can help look after nana, have support with my long term I'll health, company for me and the kids, help with bills for them, etc. We were staying over all of every weekend anyway and nearly everything about it has been a really good idea.
Me + kids live in what were the spare room/storage/office and the room where my youngest sister stayed when she visited (she was the last to leave home but she left uni nearly a year ago and lives the other side of the country, staying with her boyfriend when she does visit). Other sister lives with her boyfriend nearby now, she did used to live far away too and stay over in one of the two rooms but now she just visits most days.
Part of the agreement of me moving in was that I would make room for some of youngest sisters stuff and make my room available if she (or other sister) wanted to stay over. This is fine, I have a double sofa bed and my three quarter bed in my room, and I can jump in with the kids or sleep on the soda bed in Nanas front room if for whatever reason we don't want to share a room (eg if a boyfriend comes too)
All lovely.
HOWEVER.
My Dad informed me with two weeks notice that I need to tidy and declutter my room, because his friend, her boyfriend and their two dogs are staying a night.
My kids are at home that night, so I either have to sleep on their floor or downstairs out of earshot, with two strangers and strange dogs next to the kids room. My cats stay in my room overnight and have their litter tray and beds in my room so I will have to move those and hope the cats don't wander in and get eaten.
We are a very welcoming family, not providing what we could to a guest is just not how we do it, but up to now I've only had people I know in my room.
I can't refuse now, it's all arranged, but AIBU to be miffed when my dad keeps telling me to declutter?