All safe after earthquake. I misread your drawing. You have lots of space. I would turn the vanity so that the sinks are opposite the entry. No windows were shown, so I am assuming this is a windowless bathroom -- can you add a solartube for natural light? I am not a fan of putting the toilet in a closet -- makes me feel claustrophobic. I am attaching a proposed plan. Enclosing the toilet will make the room feel less spacious. Consider an etched glass panel to "hide" the toilet space.

We renovated recently and removed an old cast iron tub that had been reglazed badly several times - it was tough for our plumbing team to find someone to cut it up and get it down the narrow stairs.. we opted for an acrylic model for our replacement, I absolutely love old things too but definitely appreciate the new pipes that our team was able to run to the new bath as well as a nice level subfloor 😅

Help with what? What do you need in this bathroom? What size is the bathroom? What size door? What size window? We need a floor plan with every dimension included? What can move, plumbing, electric, etc.?

This is our first time ever redoing anything so not sure which route to take. I'd recommend hiring a general contractor for this. I've done 3 remodels at 3 different homes and always took a general contractor. A lot of contractors will advertise themselves as ones that specialize in bathroom remodels / kitchen remodels, I'd stay away from contractors who specialize in new-builds / additions, etc., because this job may be too small for them. This job will probably need a few sub-contractors - plumber, electrician, tile setter, dry-waller, framer(?), etc. - coordinating all of them will be extremely difficult to do on your own. If you know exactly what you want (in terms of what goes where, materials selections, etc.) - prepare a file with all of these details - it will make it easier for the contractor to give you an accurate quote. I typically do it in a PowerPoint file, with photos, sketches and links - here are a couple of example slides: placement of plumbing/bathroom layout is the only thing staying the same. That would definitely make things easier and cheaper, but there may still be a lot of work involved, depending on exactly what you are doing. For example, we replaced a built-in tub (the one pictured above) which had drain on the side to a free-standing tub with drain in the middle - so we've had to move the drain location ~2-2.5 ft, which actually required drilling into the concrete slab foundation, etc.... very noisy and messy :) Another example - when we ripped out the tiles/drywall on another master bath we remodeled - the entire framing was black and crumbly - all mold. The master bath basically needed to be completely re-built. So make sure to account in your budget for surprises which may not be known when the contractor would be putting together the quote.