We are still working on our new house, there is currently a bath with a glass half screen that is totally useless. The water bounces off whoever is showering past the screen and over the toilet, the floor, the ceiling, and it's only a half tiled wall so the wallpaper is peeling. I've considered the P or d shaped baths which give a larger section at one end in which to stand when using the shower and I've seen there are matching curved glass screens to go with them. Two points to consider. 1. If you are not planning on staying a shower could be a good selling point, the water saving of a shower versus a bath. Our last bath hardly saw a look in during 16 years and although it was a lovely deep double ended steel bath it gathered dust and the shower was definately the go-to choice. 2. I am now considering the usability of the bathroom for an elderly relative who has had a stroke, likes baths, but may not be able to get into, or out of one, with dignity intact. I'm thinking that a large walk in shower with additional wall jets could be a good option and the upscale could be a wow factor. Although you may not be in the same position you can never have enough forward planning.

I have lots of opinions about what I might do. I would use a deep colour on the walls- either as a tile or paint in untitled areas. I think the way you avoid it feeling tight is to keep it simple as you already have pattern in mind for the floor, I say choose a large wall tile and on the sink wall have a big mirror. I also think you can make the room seem bigger by getting rid of clutter which means ensuring you have lots of storage and I would put a cupboard around the boiler to hide it. If it were me I would be thinking about the roll top bath and considering if it limits the opportunity for a shower. You should also think about if you ever intend to replace the window as it would be better to do it now before you retile. Best of luck

This might sound a bit oddball but how about a vintage tall corner cabinet for storing towels, bottles, etc. Just think that if you went with a small cabinet you’d have the same issues that you’re having now. There are lots of styles which you can pick up second hand for next to nothing and you could paint or varnish to how you want (this is just an example: https://www.ebay.co.uk/itm/Rustic-Tall-Corner-Cabinet-Shabby-Chic/253999560281?hash=item3b238db659:g:dasAAOSwRhFbo1mG ). I initially thought of wallpaper but think it will look too busy all over, how about getting a sample and putting into a frame for artwork. I saw this pattern (see pics) and thought it would look great with your decor, thinks it’s called Flying ducks by Mulberry. Also added a pic with idea for mirror over the sink. (Click to enlarge pics).

https://cpc.farnell.com/timeguard/fst24/fused-spur-time-switch-24-hour/dp/PL14941?mckv=3RbjvNyX_dm|pcrid|75110407246031|kword||match||plid||slid||pid|PL14941|&CMP=KNC-MUK-CPC-SHOPPING&s_kwcid=AL!8472!10!75110407246031!4578710019920208&msclkid=421ef11a54701d10df8490e27b566ea4&utm_source=bing&utm_medium=cpc&utm_campaign=M-440-Shopping-Electrical and Lighting&utm_term=4578710019920208&utm_content=Plug-in Timers & Time Switches You need to get a radiator with an additional electric element then control the power to it with a hard wired switch