In most of the suites I have seen (Fantastic I think?), there is frosted glass in front of the shower/bath (with the shower being slightly more private), but the toliet is pretty far back and not behind the frosted glass portion, so would probably be ok.

The spectacular rooms described by LOUIE_LU, have the worst toilet privacy issues, IMO.

Just more upgrade data... I have stayed here 5-6 times recently and usually a "Wonderful Queen" (the cheapest/crappiest room). Most of the times I was upgraded to a spectacular king on floor 10, which is very small, but fine for business travel. This last time though I reserved a spectacular king, and received a spectacular king on the 5th floor . It seems when I have checked in late (after 9pm) I receive a worse room, but I don't have enough data to prove that. I have never been upgraded to a suite, but a colleague of mine who stays the same dates at the sames is 90% for getting a fantastic suite with Washington Monument view.