Can he afford accommodation that expensive?

I'd be leery about separate rooms with kids that young. A separate bedroom with another part of the room like a lounge, would be much more appropriate - they're usually more expensive, but not by all that much.

Have you told him you'd really prefer not to all be in the same bedroom? Have you offered to pay the difference?

If you are willing to pay extra to make this happen, fine. I personally have shared a room with my SD's a few times because we didn't have the option of a 2nd room. Either it wasn't available or it wasn't financially a possibility.

I understand how you would want your own privacy but getting more space does cost more money.

Far from unreasonable IMHO. I would say in an intact initial family it might be more appropriate than with a Bio Parent/Early Step Parent situation.

My wife, the SKid, and I shared rooms several times on holiday over the years and occasionally still do depending on the situation. But, his mom and I married when SS-24 was a toddler so our situation was far different than yours currently is.

Good luck.

Personally, I would not be going on a vacation with a BF of less than a year, with his 2 young kids. Just the two of us, sure, but not the kids.

And if I were to go, I would pay the extra to have a suite. If I couldn't afford it or BF wouldn't pay for it, I wouldn't go.

But if I were you, I would re-read your post and really think about this relationship and if it's what you want long term. Right now, a devoted dad who likes to devote all his time and attention to his kids 200% of the time, sounds like a great dad, however, down the road, that "devotion" turns into something else and it makes for a really bad partner.

If it is affordable then I would get the two rooms or whatever also. Even if they were biokids. It's just nicer when there is a bit more space.

This is a week long vacation. Even he's gonna be tired after 2 nights of no privacy and being up the second they are. Or having to sneak around so you don't wake them up.

Nope you are not being unreasonable..... you are being daft....

you've met this man and you are only dating a couple of months now, not even a year, already he's out of being in love with you and see you only as a carer for his children... hence the one room for all 4 off you...

Simply tell him you can't go on holiday with them anymore due to a work deadline, project dead line, what ever reason you have, tell him to enjoy it with his children.... then enjoy your week off at home.... or go somewhere else...

belief me if I dated a guy for a couple off months and he wants me to spend a week in a room with him and his kids... he never would've seen me again

I 'get' why this would be uncomfortable for you. Your bio states your age and no children. So yeah, you're looking at this as WTF and he looking at it as routine what's the big deal. I imagine his get-away trips when he has his kids have always been smash the little darlings in.

You have to talk to him. What's been normal to him is going to have to change up a bit now if he expects you to be comfortable and participate. Otherwise he can take the kiddies on a kiddie vacation and separately take you on an adult only vacation. His choice. Accommodate your needs and you'd like to join them, forget your needs and consideration and no thanks.

I don't think it's intentional, I just think he doesn't see this from the angle you do. The suite with pull out or cot in the livingroom area for the kids and a private bedroom for the adults would be fine with you. Yes, you could offer to help pay the difference (how do you two normally do your finances?) , while some men may be offended by that offer.

The kids are too young to be in a separate hotel room (yeah, I know, some would think that's fine and their kid could do it blah blah...I'm speaking for me, and I would not book a separate room for two children 8 and 10).

Get this addressed and settled now, then go and have a lovely vacation. After a week with two young kids, you'll need another week to yourself after to recuperate

I think a lot depends on who's paying, what can be afforded, and how much communication happened beforehand. Having grown up in a family that traveled a lot, there was never any question that kids and adults stayed in the same room. Any adult who wanted privacy on a family vacation had to pay for their own room. Part of the reason is that my mother always said "This vacation is not to sit and enjoy a hotel room. It's to enjoy the location. Get your behind out of the room except for naps, bathroom, and sleeping! If you complain about the size of the room, remember every extra dollar spent on a larger room is a dollar you can't spend on experiences and souvenirs.'

As someone who has endured the Hell of sharing a room with skids, I suggest paying the extra expense to get a suite and save yourself. I refuse to share a room with skids now. We get a suite and even then sharing a bathroom is not fun but doable.

I planned a long weekend trip for my DH and Myself to go visit my BS out of state. We took along YSS. I decided immediately that I was going to book a suite so DH and I could have some privacy. The cost wasn't any more that a regular room. I would NEVER in a million years go on a vacation with all of my SS's nor would I stay in one room with them. I can barely be in a car with them for longer than 15 minutes. Ummm No way.

No you are not unreasonable.  Two rooms with a connecting door, or a suite with a BR and fold out sofa in the living room should work for an 8yo and 10yo... or even a palate on the floor for that matter.