My house and bathroom are small so space saving is critical. The original old bathroom layout has a small square shower and a separate half bath, with an even smaller basin right next to the toilet. It was claustrophobic and the half bath was only used for storing cleaning stuff. When we renovated, the bathroom was gutted, keeping most of the original plumbing points. Though we are not "bath persons" we decided to have a shower over (normal length) bath with frameless swing glass screen. From past experiences, I find it easier to clean a shower-over-bath than a fully tiled shower area, or one with a shower base. When visitors with young children came to stay, having a bath was handy. Combining shower/bath gave us room for a long vanity with plenty of bench space and away from the toilet. It now has ample of space in the middle for changing and moving around each other. Shower-over-bath definitely is an efficient use of small bathroom space.

I have a shower over bath combo' which its plastic resin something? It's a old bungalow and pitifully small. The amount of times I have nearly slipped over getting out, or lost my balance with soap in my eyes/ or after having a glass of wine. hate hate it. I did see a shower room with a additional hand held device and a over head shower. I thought that good for the odd squirt your feet down. The next owners will probably rip it all out and start again any way when design ideas change.

How's it going ? U in yet? You loving the country life? Great flower stalls on that road, or use to be! $2 bunches.. Can you look at my 'tiny house' the size of your powder room..lol https://www.houzz.com.au/discussions/6042198/those-with-an-eye-for-colour If you have any other ideas. I got some good ones already. But throw any more around that you think might work.

En-suite layout is fine, Looks like you have a double hung window with a slightly lower sill to the vanity height. . I’d put a stool in front next to shower screen. Update vanity and top and splash back, maybe lowering mirror. Could put a niche in the side wall if want extra storage. Could change mirror to a cabinet, even if it protrudes, mine does, A smaller basin would increase spaciousness and bench space. Can also increase depth of vanity, to 550. Replace floor tiles if you want but I’d leave shower if you want to keep costs down. otherwise retile to full wall height will improve look. Could add a pendant light over left side of vanity