So is that a three-sided fireplace? Do you have any better pictures you can share, especially from inside the bathroom looking into the bedroom?

Is your toilet in a separate room?
Our bathroom is open to our master, but the toilet is behind a closed door. We thought it would be odd to begin with, but it’s no big deal now.
As long as your John is private, I’d live with awhile and see if you really need a door.

Doesn't look like you would have room for a barn door even if you actually wanted one.

Bi-fold doors may work as long as you have code access when the doors are completely open.

Rebuilding the left wall both in width and thickness to accommodate the electrical with a pocket door would probably be best. I’d hate to block the light by the tub with a swing door of any kind.

I think bsgibbs gave the best advise...live with it awhile. If you can't stand it (no door) thinkdesignlive idea of a pocket door may be the only answer with your fireplace ( looks like it is a 2 or 3 sided one). Unless you expand the left wall to make room for the dreaded barn door. Both those solutions sound too expensive for me! If you just want occasional semi privacy or just don't want to have the bathroom visible from the bedroom maybe a portable screen (i think they call them dressing screens??) would work??

@sammy at this time, since I haven’t moved into the house yet, I don’t have any other photos. It’s a two sided peninsula fireplace.

@bsgibbs The toilet does have its own door. The issue is more two different schedules so hearing the shower and having the lights on in the bathroom when someone is trying to sleep might get old. It will be something we will have to deal with for the first bit but I know we will have to put a door to divide the area.

I agree with thinkdesignlive, a pocket door would be the best solution if you want a doot there.

I get up a couple hours earlier than my wife and I use our other bathroom. Our en suite has a door, but my wife is going to be awake if I'm using it, door or no door. The most practical options of a pocket door or bifold are also going to be the least effective in preventing whoever is in bed from hearing the shower. But, if you are a heavier sleeper than we are, then those seem the best options.

I always want to ignore the "live with it for a while" advice, even though it's really wise and I'm usually surprised when features I thought were awful turn out to be okay or even good.

That said, my NOT prudent self would rip that fireplace out and use that wall for something more useful like a recessed TV niche or whatever, and put in the bathroom door you want. I wouldn't like seeing into my bathroom even if I wasn't looking at the loo.

I don’t have a door into my master bathroom either and I like it. I have a water closet so the toilet is private. I have a big window in the master bathroom and a free standing tub underneath it. I love coming in my bedroom and seeing that. Live with it a little while and then see if you want the door.

This may not be the ideal long term solution, but maybe in the short term you can hang some thick privacy curtains inside the bedroom that when open will reside on the left hand wall.

You’ll need to consider the light that will be showing through the fireplace, if schedules are a consideration.

From the image you shared it seems necessary to add framed structure for any kind of door - but looks like you've room for a conventional door with an inward swing against the tub surround. Make sure to use a sound deadening or solid core door for your purpose. Good Luck