What are the dimensions of the room, including the dimensions of the toilet nook? It would be good to move the toilet as far away from the vanity as possible. I don't see the point of a second sink near the toilet.

You may find this link helpful. It has minimum clearances for toilets etc. Is this in the USA?

For a roomier look do everything white. Invest in a pedestal sink or a floating vanity that attaches to the wall; HD has a look like that. A round mirror for a modern look; check IKEA as they did have a cool round mirror. Modern light and single sleek faucet.
Also they make some great compact toilets that will give you more room.

Unfortunately, a round mirror + pedestal sink = no storage space in an already small and narrow bathroom. In terms of dimensions, I'm not sure actually. Plumbing cannot be moved at this time. Thanks for the feedback!

I would find a tall rectangular mirror to use above the sink or medicine cabinet that can be shifted back a few inches into the wall. Tile the whole wall (white) behind the sink and next to the toilet, moving into the the area behind the tub/shower. Move those towel hooks away from the toilet to the walkway by the tub. Use a white cabinet for the sink, paint the walls white or tinted white, and put a patterned floor tile in for interest.

Pedestal sinks are useless in a working bathroom. Powder room? Fine. But this room needs storage and counter space--as much as is possible--in the area.

Plus, a recessed--not wall-mount--medicine cabinet.

I'd use a real wood cabinet, not painted. It's a tight space and it may get hit more than usual, and a natural finish is less likely to show dings and scrapes than a painted finish.

If you plan to replace the toilet, get a round bowl, to shorten the length.

I can't see the toilet nook, but is there room to rotate the toilet so that the tank is on the wall with the sink? Then a thin shelf could continue the countertop just over the tank. (yes it would need to be moveable to access tank.) it would give more storage and display space and create a horizonal design element to visually widen the narrow room. Could you find one of those vintage corner sinks and add a skirt or build a vanity for storage. You wouldn't move the plumbing but might need a longer water supply hose in order to change the direction of the toilet and sink. Consider using a small wet bar bar sink to save space.

In such a tiny space, a larger rectangle mirror would be better to open the space than the trendy round one. Even better would be a a big medicine cabinet. A mirror on the wall opposite the tub would visually widen the room. You could recess narrow shelves in the long wall between the the studs and add a sliding mirrored door. Even just a niche recessed in that wall would break the long wall expanse. A towel bar would be convenient .

A diagonal pattern o floor tiling would give the illusion of a wider room.

Use all the optical illusions and space savers you can.

This is the link I meant to post https://www.thisoldhouse.com/ideas/big-help-small-bathrooms

My son just put the wall hung Ikea Godmorden/Odenvisk vanity combination in a small bathroom in his house. He got the wood finish. Good storage drawers and the space underneath makes the room appear larger, and also is a good space for something like a bathroom scale. Ikea is a good choice for smaller-scaled items, and good storage ideas too. https://www.ikea.com/ca/en/catalog/categories/departments/bathroom/20802/?gclid=CjwKCAjwqLblBRBYEiwAV3pCJh-zvscdXcZjSVjE5hTz0qeBf-p3zSl7faqLUOyz693UqIpPUieDFRoCUnUQAvD_BwE

I’d get a small wall mounted sink with drawers. Rejuvenation.com has some really nice options. I also would move the towel rack the wall across from the tub/sink and then install floating shelves wabove toilet for extra storage. Agree with white walls, but maybe a fun tile floor for a pop of color!

A clear shower curtain will help the room look bigger.

Tile the walls up to the ceiling using a vertical pose. Do one or two vertical bands of tile in a contrasting color on the wall on the right of the picture. Tile the back wall in the contrasting color as well. Above all do not do a horizontal band of tile which would only reinforce the corridor effect. Good luck and have fun!

You need to find out what the requirement in the building code is for toilets in your area. It is likely either 30" or 36" Now, put your tape rule end at the center of the toilet, going left to right. Measure either 15" (for 30" requirement) or 18" (for 36" requirement) to the left and right of the center. Mark this on the floor to the left and right of the toilet. Now, put the end of the tape rule on the front lip of the toilet seat and measure 21" in front of the toilet and mark that on the floor. Draw level, straight lines going from the wall behind the toilet through the right and left marks beside the toilet. Draw a level line that goes right and left in front of the toilet through the 21" mark. Extend your side lines to meet that front line.

You now have a box around your toilet. Pretend that this is the bottom of a cube that goes to the ceiling. Nothing, including the vanity or even a wall-hung sink, can be in that cube.

From here, it looks like your vanity may be in the cube, even for a 30" toilet clearance.

Let us know how much room you have between this cube and the wall in front of the toilet. I am afraid you will be lucky to fit a wall-hung hand washing sink in this room. If you are lucky, you may be able to put in a corner wall-hung sink.

When this becomes a rental, do you have city rental inspectors? How much do they check for building code violations?

Replace the tub with a shower and you’ll have more space.