Details, details, details....
Here's a close up of the shower pan. The frameless shower door has a very minimal track, which means it's a lot easier to keep clean.
The marble floor tile was also used to form the shower curb, and tile base around the rest of the bathroom.
The floor of the shower itself is a cut tone pebble...it has a bit of texture when you step in, but too much...it's very comfortable on bare feet!
High enough?