Well, your bathroom is twice the size of our little 3/4 bath. First of all, the location of the doorway makes a big difference. With ours, it is in the middle of a 8.5' long wall, with the tiled shower to the right and the compact 1.24 gallon flushing toilet at the other end. It has a ceiling exhaust fan and an a/c vent, my DH built a couple of 10" deep shelves on the toilet end of the space. The floor is tiled in the same tile as the shower. There is beadboard wainscoting painted semigloss latex enamel white. The top is painted in a Behr satin latex enamel, all painting was over alkyd/oil primer. The ceiling is the same color, which is LILTING LAUGHTER, very soft and pale. The sink is the smallest I've ever seen, with the faucet mounted on the right side, not along the wall. I used a Price Pfister ORB pump style single hole. The sink does not have an overflow, but that has not been a problem. It is wall mounted, and is absolutely precious! We opted to omit a medicine cabinet in this bath, since the toilet in the other bath was located behind this wall, so I put an oval ORB mirrow that was the prettiest I could find. We also put in a pocket door. The toilet I chose was the Cadet 3 by American Standard, and it has many great features to recommend it. We've used it since about September and NEVER have had a failure to totally and cleanly flush. Never had to flush twice either. It is the 1.24 gallon Water Sense version of the COMPACT Cadet 3. Our contractor is pleased as punch with the way this tiny bath turned out. It is the smallest he's ever built, he said, and it does everything you need a bath to do. The pocket door does subtract some space from width of the room. If I could do it over, I'd probably install one of those by-pass barn door thingys, which would look fine if you have enough flat wall beside the doorway on one side. You buy the door you want and then mount it with a track over the doorway and down the wall. For our use, I'd have it mounted in the hall on the wall shared with this tiny bath. I use robe hooks instead of towel bars. I also have a wall sconce beside the mirror (ORB of course) and inside the shower I used a water proofed marine fixture which has an o-ring for the clear glass globe. Here is the toilet and sink half of the "room" before it was finished. The sink is the Porcher Elfe model. I dare you to find one smaller! :) The pocket door and the hallway. And the shower, being used but the niche for bottles etc is covered up while the grout dries. Love the Pulse Showerspa Hana model! This little bath was created from two closets and a piece of space from the other bath, and the door was the entrance to that other bath. Now, there is an ensuite bath for the master bedroom and it is still under construction.

In the picture, black is the current layout. Green is the change if only shower was made bigger and one door would be eliminated. Red is a complet demo, removing the wall section between two toilets. All the water lines from upstairs are in the section of the wall that is between two toilets so removing this wall would require a major move of water lines to the side and there would have to be a section of wall kept behind new toilet and vanity. The door from master would have to be framed and move to the left as a pocket or barn door. The drowing is disproportionate. It is all very cramped in there Current shower is only 26"x26". But may be replacing vanity for a wall hung vanity in the larger bathroom would change the feel. It will all have to be torn down and replaced including removing subfloors as they are rotten. So either remodel will be a lot of work. What should we do?

Thanks for all the replies. J Design - the ceiling is 8 feet high. To the left of the photo (unpictured), there will be a new 60x30x18 tub. The back wall, pictured, is 80" including where the tub is. That leaves 50" and realistically 48" to play with if I space the edge of the sink at least 2 inches away from the tub. After looking more closely, I'll need a pedestal sink narrower than 22", the sink pictured is 19" and the tub now is 29" on the most outer part. ACM, I think unfortunately, having even a small vanity would seriously crowd the tub, or vice versa. We hope to put a partial glass enclosure but need to think about if we can hinge it at a place that still gives us room to exit the shower near the sink. Does this all make sense?

https://app.photobucket.com/u/treeshouse/a/eee8238a-84bc-4735-bc72-7b1eda3aa83b Our Hall/Guest bathroom measures 5 x 7. We used 12 x 12 tile arranged in a bias to break the alignment.