I'm not sure separating the toilet does a lot of good unless you're often brushing your teeth at 3am when Grandma needs to pee. :)

I like idea #1. Seems like the most functional bathroom. Add a seat and a couple of well-secured grab bars, and the shower becomes pretty well set for older parents too.

I would certainly remove the majority of mirrors; they are disorienting and that might not be a good thing for your elderly parents. Is there room to carve out a small guest room for them on the ground floor? I am a shower person, not a bather. A large shower with a seat/bench would be my choice, but you might install glass walls and a shower into your current tub. The "door" below folds and pivots in and out. A pair of them on each side might be helpful in converting the tub to a combo, or use one between two standing panels of glass left and right of the step. Aqua-Fold at Lowe's. Adding a brass hand rail on one side of that tub step could be helpful to them. Have you considered moving the toilet to the current shower area for privacy? I thought a lot of dome homes had a skylight in the center. I guess that's out of budget, huh?

A 5' (60") tub is too short for many people; 48" seems pointless.

As to the shower, any chance you could create a wet room? You wouldn't need any flat walls, just a shower head and tiled floor and walls. I'm guessing large format tiles would not work for you, but penny rounds or something might.

Hello! Thank you all for your comments and feedback. So the idea is to create the wet room, no threshold shower in the current Tub area. Definitely grab bars, seat, nom slip floor and hand shower.

I guess the old shower are could be toilet closet, I didn't think of it but like that idea a lot. We can still put towel rack or shelves on the other wall.

Yes, the first drawing is the current layout and it's not bad. Still going through the motions of considering pros and cons of things.

The tub would definitely be small and I heard that's too small so cute be grotesque. Maybe I'll pass on the tub.

Cheers!

Is there another bedroom and bathroom on the first floor? What is below the bathroom?

Bathrooms above living areas can have problems with noisy toilet flushing heard in the living room. Consider how you run the plumbing lines with extra care.

There's kitchen below. We didn't have a problem with the flushing sounds so far. The areas downstairs are foyer, family rooms, laundry, and one small bathroom.

As in one of your options where you question the purpose of the 'powder room', it may not be the ideal solution but I think is worth considering. For 90% of the time when you have no guest, you could use the 'powder room' and the shower/vanity area as your ensuite. For the 10% when you have guests then the whole space becomes a J&J just like you have now. The advantage of this layout is that your guests have their own vanity and that they don't need to go to your master-ensuite unless they want to take a shower.

This one is pretty much the same as above except that I switched the toilet and the vanity in the 'powder room' and changed your closet configuration to give you a larger vanity. The mirror closet is now part of your master closet but it can stay in the guest bedroom if you whish:

I am not sure where you place your bed. Is it against the bathroom wall or the exterior wall? If it is against the bathroom wall, you could do the same in the guest bedroom with this layout.

Suzanne M. We are seriously considering the 1 toilet solution above, that you have come up with. Double pocket doors. This would allow 2 people to start getting ready at once.

We might be able to extend the bathroom a little bit into the closet area.

I really wish we could make a bigger closet, but there is something between the two closets, I think HVAC tunnel as they are not right next to each other.

Thank you for the idea :-)

@Doudini may i ask how the hammerhead fixtures are holding up? I’m looking for options that aren’t plastic, and it looks like either Hammerhead or German stuff (Grohe or Hansgrohe).