Single Person Refuses Bunk Bed in Airbnb With Couples

For my friend’s birthday she wanted our friend group to go away for the weekend for 2 nights. We are a group of 6 girls and she said that partners are welcome so there are now 10 of us (4 couples and 2 singles). She organised the Airbnb and we are dividing the cost equally between everyone.

There are 6 rooms: 2 rooms with a double bed, 2 rooms with 2 single beds and 2 rooms with 2 bunk beds. None of the rooms have ensuites and there are 3 bathrooms in the airbnb.

For deciding who sleeps in what room, myself and my friend that organised the trip (both the single people) asked can we pull names from a hat to see who sleeps where to keep it fair. (Myself and my friend have decided to sleep in the same room so it will be 5 names picked out of a hat)

Two of the couples are happy with this arrangement but two of the couples don’t agree with it.

One of the couples said that they are paying more so should get a double room but I can’t understand that way of thinking. They aren’t paying more, they are each paying the same amount for 1 adult as I am. A couple is not 1 unit, they are still 2 people that will be using the shared bathrooms, 2 people that will be taking up space in the kitchen and living areas.

I went on a trip recently and had to sleep on a bunk bed and had the worst sleep on it. I have slept on a double bed since I was 14 years old. I don’t think it’s fair that just because I don’t have a boyfriend I should automatically get the worst sleeping arrangement. Especially as we are all paying the same amount.

I can’t stop thinking about the situation and I am feeling sad and upset that they would be happy with automatically putting me in the worst bed due to not being in a couple. I just want it to be a fair decision.

Am I the asshole for not just offering to take one of the rooms with the bunk beds?

Edit: me and my friend will be sharing a room so it would be 5 names going into the hat. Also to be clear, I did not book the Airbnb.