Master Bathroom Remodel

[Theo Guy]

I'd like to renovate my master bathroom, change my curbed shower to a curbless shower/walk-in shower. 

I know I need to waterproof the floor with backer board. I plan to waterproof the entire bathroom and the walk-in closet. I know this will raise the floor up a bit, and I am concerned it's going to look obviously ugly if the master bedroom floor is sitting lower than the new master bathroom floor. Has anyone done this? how bad was the height difference? Did a transition piece make it look better?