Accommodation and payment arrangements for this trip

[SuperTea]

I'm going to an event overseas in a group of six. We need accommodation for 3 nights and are looking at a house/apartment.

One the face of it, we need 3 rooms. Except, we are:

A married couple
Two single men
A married man who's wife isn't coming
Me

So we need 4 rooms? They're all decent enough, I could share with any of them without issue, I think, but not sure that I want to or should. I'm not going to ask the married couple to split, their very active sex life is a taling point in our group. I'm not getting in the middle of that 😆

At least one of the men would definitely be comfortable sharing with me, so it me that's "causing" the need for the extra room.

Do we split the cost 6 ways, or do those who are sharing pay 1/4 per couple and the two single rooms pay 1/4 each. One that basis one of the men ends up paying extra because of me.

I don't really expect it to be an issue and I'll go with whatever everyone else is comfortable with, but I wondered what should be expected/suggested?

Or do I just put it out there that I'm happy to share if they are?

Can you cost it up?
So, for example 2 suggestions for accommodation. 4 bed, that would cost 1000 for the trip, or a 3 bed at 800 if someone is happy to share with you (I assuming you are female?).

If 3 rooms, I guess the split is equal per person.

If 4 rooms, I think I'd go 15% per person who is sharing, and 20% for those on their own.

I've now got to the point where I won't share a room with anyone other than my DH or my kids, so I think you need 5 rooms.
I think the cost should be split 6 ways - if children were involved it would be different, but as it's 6 adults it's split equally between them.

I’d split per room, assuming the rooms are all of same standard