PIL moved abroad when me and DH were first dating 11 years ago.
When they come over they stay with us - sometimes for up to 2 weeks plus.
When we were a couple with a spare bed I could grin and bear it. We now have 2 children - and no spare bed. Meaning if they stay, someone is on the sofa or an air bed. Plus youngest DC is still in our room so if they have our bed it means moving her cot into the living room as they won't sleep with her and the bedroom that is hers isn't big enough for the 3 of us. We could put her in with eldest DC but he's at school and would disturb him in the night.
I can't relax when they're around either.. his mum always makes snide comments. I know I'm not perfect but I don't need to be reminded I'm not perfect in my own home. I can't just relax in my dressing gown without feeling awkward and having IBS I end up with a lot of stomach ache while they're staying holding farts in as embarrassing as that is to admit! 😂 I don't need her making comments on my parenting, asking if she can "make a suggestion" when me and DH are talking.. his dad with football on the tv 24/7.. it's painful.
AIBU to now suggest the time has come for them to get an air B&B next time?