At this age you should just ask for favorite colors, and then you pick the complimentary covers. Real privacy demand won't happen until about 11 - 13, so right now just concentrate on making it beautiful. If it is pretty and functional, they will love it! Buy furniture pairs so when you do split them up they each have basics. Advice about dividing the room generally is good, but you don't want big sister declaring any territory! There is a crown detail you can do over a bed that includes curtains down on either side - can provide privacy when you sit up in your own bed - consider this as they get a little older and won't pull it down while hijinxing. If it is beautiful and the textiles are in a color they love (or two colors that work together, like pink and lavender on a spring green or taupe wall &/or turquoise and spring green on a buttercream yellow wall ) - then they will see that they can also be different people who are harmonious together. At 7, she is old enough to pick a great color, but don't ask the 5 year old - her taste is changing daily - just surprise her with something all her own that works with sister's pick. I like the look when people select soft goods that match except for color and find one great print accent pillow that ties colors together for both beds. Stay with neutrals on furniture - you can paint out different stuff so it is tied together with pale gray paint. Think mostly about function - Add shelves and cubbies that hold baskets for stuff - stuff changes but they always have it. If you have room, give them each a desk as they approach 5th grade.

I don't see the point, just like T.V. How long do you really spend in there anyway. Maybe once in a blue moon it would be nice but really? To be perfectly honest I don't understand the fascination with the huge bathrooms that need hours to clean, I would rather save that square footage and use it for something I would actually need like a bigger walk-in closet for instance. I live in MCM house we have 3 bathrooms all small and I love them. They are easy to clean look great and what we have are nice big rooms that actually function well.

I found this photo online, perhaps it will help. In this picture the crown molding on the cabinets flow from the kitchen to the adjoining room. Maintaining continuity with the color and some of the trim detail will make the rooms transition nicely. Don't overlook the details like hardware finish, lighting and plumbing fixtures as these elements can also tie the two styles together. I hope this was helpful.

Your client putting trust in you was the right decision! amazing transformations! Love the natural light in particular as thats a great spot for a post gym pump flex for a good selfie!