To be uncomfortable with the bedroom arrangements

Because the other poster is likely assuming your partner is male... Despite you using 'she' multiple times.

It shouldn't make a difference imo, but it certainly does on MN

If being ‘unreasonable’ ensures your daughter is safe then be unreasonable.

I can't see anyone else is going to be bothered by this - one less potential disruptor in the shared room, and it's not as if you're demanding she has her own room.

Presumably child cots are available, or a bed can be moved from the shared room if she is too big for a cot.

This.
skiing is exhausting, they’ll all need to be asleep by 8pm if they’re to be up and back at crèche/lessons for 9am.
i don’t even let my 8 & 10 yr olds stay with their mates - they share together to ensure good sleep!

They won’t sleep
anyway; it’s a mad idea. It’s my bet they’ll all end up in their parents’ rooms so why make a fuss. Sounds like pandemonium in waiting with four grumpy kids to entertain. Everyone will realise on night one what a daft idea somebody had had.

I certainly wouldn’t put a 1yr old 2 yr old in a room with others,what is wrong with their parents?!

That’s good parenting and keeping your daughter safe.

Yanbu op. I have a 4 year old and couldn’t imagine going away and leaving him in a room alone with other children and adults around I didn’t know. Just say DD will stay in our room thanks!

It’s an issue because the respondents thought she was a man, and in the eyes of many MN posters all men are degenerate child abusers. Just look at these responses for this and any other thread for proof.

How on earth do you know she’ll be petrified in a room full of other kids? Not all kids are helicopter-parented into a state of anxiety.

My daughter had had multiple sleepovers by that age but she’s not helicopter-parented by terrible parents.

I’d feel the same as you!
just say “oh my daughter doesn’t sleep that well so will want to be in our room. I wouldn’t want her to wake the other kids.”

as soon as people think your daughter will be waking their sleeping children, they’ll be more than happy for your daughter not to be in the shared room

I think actually on thinking about it that it’s a lovely thing to consider doing. Your daughter is your partner’s parents future step granddaughter and they are very much treating her as part of the family and including her as they are the other children who they are actually related to already. That’s really nice. So I agree with the previous - it’s a nice thought but it’s also fine that it won’t work for you. Everyone knows small children have their preferences so you only have to say your daughter wants to be in with you and that’s the end of that. As long as you aren’t making decisions about the financial contributions that affect other people or anything like that. And you have a plan for where she’ll actually sleep as like others said - sometimes chalet rooms won’t have space for an extra bed unless it’s clear.

edited because I confused myself with the generations!

Totally your choice, as a pp said, just pop one of the matresses from the kids’ room into yours, as a pp says.

Just to warn you about sleeping arrangements - chalet bedrooms can be TINY (like, a foot on each side of the bed tiny), so the plan to bring a mattress in from the kids room might not work.

Just agree to it and then shove a child's airbed and sleeping-bag in your luggage.

You’re right- your daughter should go in with you. As long as it doesn’t affect rooms/ beds it should have no impact on anyone else anyway. Either pull in the mattress she would have slept on, or take an inflatable bed.

Provided your DD knows and is comfortable with your partner, I'd put DD on a mattress on the floor of your room, on your side of the bed. You can tell the others that she doesn't sleep well in a strange place unless you are close by. If this won't work, you could ask your DP to sleep in the living room and share your bed with DD.

I agree with you. I'd say she'll stay in your room with you

Say she'll sleep better if she's in with you. Either take a mattress from the kids' room onto your floor, or pack a self-inflatable mattress from a camping shop and use that.

You are 100% not unreasonable and in fact very sensible.

It's completely fine that you'd rather she was on a mattress in your room. However, MIL hasn't done anything wrong in suggesting a kids room either. These are both fine, normal options, so don't handle it as if it's a massive deal or that her kids are a risk to your DD. Just a low key shift into your room, no big deal.

It’s not a hotel, says in OP a house, then goes to say chalet

Just grab a mattress out of the ‘kids room’ and stick it on the floor of your room. Doesn’t need to be a big deal. The only issue is if your allocated room is so tiny it wouldn’t fit but I would think that’s quite unlikely. If the others are funny about it just play up that your DD doesn’t sleep well and the last thing they’ll want is her disturbing their kids so why on earth would they push it. I imagine they aren’t wedded to all the kids in one room so much as they don’t want to pay the extra for a much larger chalet that would allow all the kids to have their own rooms.