GUEST WANTS SHOWER CURTAIN INSTALLED.

Perhaps she is actually trying to be considerate because she knows that due to her size she cant fully close a screen and is worried about flooding your bathroom?
I am not saying you have to do it but its unfair that everyone assumes shes being a CF

It will need more than a couple of absorbent bath mats whilst Tessie is having a ten minute or more shower once or twice a day over a period of time!

'Tessie' sounds like she's concerned she might cause damage - I'm sure she's not expecting structural changes, more like a telescopic pole with a plastic curtain for which she will pay for.

@Tartantotty
I'm asking what @ViscousDog, and many other pp's have asked.
How can we give an opinion on whether YABU if we don't know what the current set-up is with the shower?
Meaning what is in place already, (if anything), to stop water splashing all over the bathroom?
Don't understand why you're not telling us?
Or are you not coming back?

Water will splay out over the sides and soak and even flood the bathroom.

It will need more than a couple of absorbent bath mats whilst Tessie is having a ten minute or more shower once or twice a day over a period of time!

Why should the op suffer water damage to her home?!

Some guests (DMs and MILs I find in particular!) feel happy to complain about the facilities when they stay. Last time my Mum came she wasn't happy that the only mirror in the guest room was in the en suite because she wanted a mirror to dry her hair. So she took the shaving mirror out of the main bathroom (that 6 of us were using) up to the guest room for herself.

Feel free to ignore her request but maybe have a think about what to do to make the bathroom more flexible for different guests.

OP, do you have a screen? If not, how do you stop water going everywhere?

So large that without a curtain you run the risk of your bathroom being flooded?

I would disconnect the shower and offer shower facilities by way of garden hose in the garden.

That's really not on.

What about the strain on your bed or chairs?

You must have been mad to agree to her staying!

Maybe up your home insurance to cover any breakages or damage.

I'd use the separate shower in the same room or in the other shower room!

⬆️ If they don't have bread, let them eat cake - Marie Antoinette

I'd just use the annexe in the stately grounds, as all normal people do 😁

I’m struggling to see what is weird about having a shower curtain around a bath with a shower. We have one. Without it water would splash everywhere and soak the bathroom floor.

You can say this without fat shaming, you know.

Well, you can't, obviously.

We've got the hand-held shower thingy in one of our bathrooms, but there IS a shower curtain as well, so that people can stand up and shower in they want to.

It'll be that, I bet. It's not really meant for you to hunker down uncomfortably in the bath while showering though. The idea is for you to have a bath, and the shower head is just to make it easier to wash your hair while you're in there.

We have one of these over the bath in our family bathroom. It was particularly useful for washing the children's hair when they were small. I wouldn't want to use this to take any kind of shower, though. I'd use the separate shower in the same room or in the other shower room!

In the OP's position I'd be telling the cheeky would-be guest that the en suite is not going to be modified for her but she's welcome to just use the washbasin and loo in there and use the proper shower in the main bathroom (assuming there is one and OP doesn't shower while hunkering in the guest bath!).

"She is a very large lady - no one else has complained about this, so guess it's due to her size."

Why on Earth would this be a reason?! Maybe this is her way of saying she doesn't want to slip over on your bathroom floor and a shower curtain would help her with that by keeping water inside the shower?! Your fatphobia is unreal and perfectly unrelated to the weird request from your friend.

Feel free to use your words and ask her about this instead of slapping it all over the internet that she's fat and therefore unreasonable. Honestly, with friends like you who needs enemies? Hopefully your friend doesn't know you're so judgemental and unpleasant.

Bit weird and demanding!

But do you not have anything there at the moment to keep the water in the shower OP? I'm not big and I'd find it difficult to have a decent shower without some sort of curtain or screen to catch the water and stop it going on the floor.

What is currently there?

A bath only
A bath and hand held shower
A bath shower and screen

It's weird but I kind of get where she is coming from unless it's just a bath

My friend had claw bath and hand held shower. No curtain and it was weird.

But I'd not ask her to put a curtain up!

Your friend is cheeky - either accept what is there now or stay somewhere else. Same as you do with a hotel/air b n b - where you actually pay to stay

Yes we have had that in places we’ve lived. Prefer that to a shower curtain. Having nothing at all doesn’t work though

Is it a standalone bath with an overhead shower. I'm guessing her size is her concern which is totally relevant to the thread, it's not fat shaming,

A small bath, how did that happen? And how does she know you have a small bath?

If you don't have anything in place it doesn't matter her size. It's impractical and she won't want to be responsible for the damage to your floor. Do you just not care because you don't use the bathroom and it looks better without?

Why aren't you answering when people ask if you have a screen?

Yeah she’s being a CF.

This is just weird. There isn't a certain size humans get where the water splashes out if they use a bath that has a shower over it. That happens if a person is in it an moves while the water is on.

If you've got a screen in place then the shower curtain request makes now sense, ecause surely adding a curtain too just makes it more restricted.

So is it a wet room or is it a style over practicality situation?

No that’s not true. Private homes I’ve been in have had screens. I was surprised when I first moved here 15 years ago.