We did our bathroom in our new house last year. I kept the big cupboard in favour of storage over a separate shower cubicle. Part of me regrets it because the original cupboard is crap and needs properly sorting out but we also have a downstairs shower room as well so a shower cubicle wasn't needed. I don't actually use the bath or the shower over it, I go for the shower cubicle every time. Think about what you and the people in your house actually use and prioritise that.
We got a lovely P shaped bath because I wanted a bigger area where the shower is and it is good, but it takes a stupid amount of water to fill a bath (they aren't frequent here anyway so not too much of an issue).
I like my glass shower screen with a towel rail on it.
My toilet is a back to wall toilet because the horrible pipe at the back that gets really dusty is hidden. If you get one of these check the toilet seat fittings! We have one from Victoria Plumb, had a useless plumber who fitted it, then told us after it was probably the wrong size seat (it definitely is) and he hasn't fitted it tight so it wobbles about. The issue is the sodding seat doesn't unclip like most of them, the fittings are underneath and to change the seat would mean the whole unit having to come out so I am just living with it, but it does annoy the crap out of me.
We tiled around the bath to the ceiling and around the sink and toilet. We have built in units, a back to wall toilet next to a sink with a cupboard underneath then another slim cupboard with a drawer next to it. It looks really tidy and everyone has commented on it. All bottles and bathroom crap is put away.
We have white tiles, medium size and very slightly bumpy to give a bit of texture, the grout is a light grey and looks so much better than white. We also have a line of turquoise mosaic tiles in the middle to break up all the white, they actually worked out cheaper than the little border tiles I was going to have. The walls are then painted a light blue. It's all blue and white with nautical accessories and the floor is vinyl and looks like wooden slats and they are textured so it looks like real wood. I love my bathroom even if it wouldn't be considered fashionable (I don't know if it would, I just go for what I like).