Hello OP
We've recently finished our house renovation. There are three of us (adult DS, my OH and me). Master bedroom and my DS's room have ensuites.
I chose designs/functions that would suit each person. As this is our forever home, I -definitely probably over-spent!
Master ensuite and family bathroom are tiled floor to ceiling. DS's room and downstairs cloakroom are bottom half tiled, top half painted.
All have mist/fog-free lighted mirrors that you switch on by waving your hand over a spot on the side. En-suite versions are both cabinets for extra storage.
Master ensuite has an additional pull-out magnifying mirror.
Both DS and my OH wanted big showers, so we went for 1200x900 trays. I decided on the tile-effect wall panels for DS's shower as they are much easier to keep clean than tiles with grout.
For the same reason (easier to keep clean, no nooks or crannies), DS has an all-in-one sink and toilet unit. Loads of storage in the cupboard under the sink.
I'd suggest fitting one electric shower. If you ever had a problem with your boiler, at least you could still shower in comfort.
OH is quite tall, so the master ensuite has got a 'comfort height' toilet. He likes to put his entire face into the sink after he's shaved, so we went for a large-ish bowl and two taps (otherwise he'd keep hitting his head on a single central tap).
Family bathroom is my personal indulgence, hence the chandelier
. It's a Victorian house so I wanted it to have a traditional feel. I didn't want the faff of cleaning under the bath so went for one without feet. It's the most comfortable bath I've ever used.
Having the light switches on the outside means no pull-cords to get grubby.
I'd recommend not getting any plug which has a little lever to open/close it. The lever always gets grubby and it will inevitably break. My plumber said that replacing them was his most common job.
I really wanted to (and did) use local businesses as much as possible. It was a real shame that I couldn't justify the price differences for the bathroom/ensuites/cloakroom. For the all-in-one unit for my DS, I was quoted £799 by a local supplier. I got exactly the same unit for £199 online. My bath was £500 cheaper online than both local places that did it.
I'd suggest letting your plumber source the sundies like waste pipes etc...they will know the brands which are most reliable.
Good luck with your project. Go for what you love, it doesn't matter if it's not 'trendy' or if others like it (would be different advice if you planned to sell).