I think a flooring and painting job will be the 1st things, i like the wood, you must turn arround this idea

The molding right? That may be the only thing worth saving .

Actually the layout is very efficient for a larger family. It allows someone to use the toilet and wash up while someone else bathes in private or takes time with makeup. How many people can comfortably live in the house? Is this the only bathroom (i.e. is it shared with guests and visitors to the house?) How long will you stay - is resale a consideration? The layout is efficient if it is shared with guests. Effectively the area with the toilet and sink become a powder room and hides all the family toothpaste/bath stuff going on. So with that said, if you don't need the second opening on the right side of the T you could put a shower there, since there is already water there for a sink. That would let you keep both a tub and the shower. If you want more light in the tub area cheap ways to do it would be with a solar tube through the roof (if there are no rooms above this) or by putting a frosted window at the end of the vanity (this reduces privacy to the toilet area so if it is needed for a powder room you may not want to do that or only put in a transom type window higher up.) Marmoleum is comfortable on the feet and could be run in the two sections easily. If the vanity is 5 feet there is room for two sinks there. If you have small children a two height vanity, one for kids and a taller one for adults might be handy. Or if you put in the shower where the other sink is making this a double vanity would keep you from losing a sink while adding the shower. Hope this helps.

Thank you, jh77. My main problem with the bathroom is its ugliness (as in teal blue marble patterned formica, peeling paint on the walls, etc.) You are right that it is not an inefficient layout. When the house was built in the 1970s, it was done as inexpensively as possible and
aside from a paint job, I do not think there have ever been any updates in the bathroom. The plumbing needs to be replaced, as does the ceiling, so this is the time to consider doing other things to it.

There are four adults in our house and it is the only bathroom on the same floor as the bedrooms. It is not big. There really is only room for one sink on the vanity.

Because we have solar panels on the roof, we can't put a skylight in. More windows on that side of the house would not necessarily be a good idea, since it receives so much direct sunlight that the rooms heat up unbearably. Our ceilings are of substandard height, which would not allow transom over the door.