I'll go with option number one for two reasons. First, the bigger pieces will look better. Secondly, it's extremely rare that either surface-- the tub OR the ceiling-- is perfectly level. You WANT to be able to cut both in.

Are you tiling this or someone else. If you are, have you tiled before? Is this a new plumbing job too? Do you have flexibility in the location of the shower head and still meet your clearance needs? Option 1- I like the symmetry. I wonder if the tile cut above the niche is too narrow. It might not be. The wall with the fixtures, is there anyway that the large tile can have the shower head coming out of the center, right to left, between the grout lines? Option 2- I like the way the niche fits in the space, up and down. Again, is the shower head dead center on that wall? If it is why not treat that wall like the end wall, center your design and work out from there. Option 3- I want to center the shower. If you centered the tile on the shower head wall, I think it would be best to mirror the center to the other wall even though on that short wall with glass wont have the tile pattern centered. But both turned corners coming from the bench wall will be the same. Should the tiles be vertical or horizontal, I don't know. The horizontal may help with illusion of more width. I am going to put up 12x24 tiles in my shower that is 60x36, where one of the 36" walls will be extended beyond the glass door. I still centered the tiles at the shower head and let the tile outside end where is does. In the picture the 3 shower wall sides are separated by a block. The larger wall is 60" and the shorter one is 36". The thin black line is suppose to represent the glass shower door. In this example I haven't figured out placement up/down for the fixtures, just right and left.

Maybe you can find a Schluter edge that you like. Theres a lot out there. have you seen it installed? I like the brushed finishes. less obtrusive than many tile edges. one continuous simple piece im not a fan of any of the plastic edges, but the metal edges in a finish that blends give a nice clean and continuous edge, without making a statement.

Your insights @J D and @thinkdesignlive were invaluable last year. Before I jump in too deep, I'm curious if you consult on interior design / bathroom finish decisions. I'm not sure how to go about messaging privately. Here's the update: not much, other than me being a basket-case. We held off the whole project because of Covid and now are slated to begin our 2 bathroom project in January/February. I'm not sure if it was clear in previous posts, but there are 2 bathrooms at hand; the new one that's being added (let's call that one GREEN- it was the focus of the previous posts) as well as the existing one that will be completely gutted and redone (and let's call that one BLUE). I'll add BLUE's plans below--if you think I should start a new thread for it, please advise! OVERALL ISSUE: I don't have a vision for the finishes of either bathroom. I'm more settled on GREEN (see the "board and batten" post for inspiration and drawing--but we will not do a wall-hung toilet). The vision for BLUE is more ambiguous. So, I need to decide on: - tile: manufacturer, layout, etc - medicine cabinets (want a large mirror but a craftsman look) - wood vs white vanity (they will be custom- I'm leaning towards wood for GREEN and white for BLUE) - vanity top (which will be shower curb in GREEN and bathtub ledge in BLUE, too, right?) - faucets - lights/sconces - sink (maybe as easy as Kohler Caxton in both) Re TILE: I couldn't commit to Fireclay tile because I thought the minimum grout was too wide. I also heard a few concerning stories. I've recently requested samples from American Restoration Tile and will go look at Mission Tile West in person next week. I'm open to other manufactures, too. I know that: - we want a small hex floor in both baths; for the green bath this will extend into the shower - we want to have a color element (hence the "green" and "blue") in both baths - we will probably go with a 4x4" wall tile in both baths, though undecided - I love trim pieces but also am concerned about $$$ Houzzers, if you have advise on how to go about creating a vision, making decisions, what to prioritize (I know with supply chain issues, everything is a priority!), or something else, I welcome it. Thank you!! Here's the BLUE plan...not committed to the tile as shown: