The actual concierge floors have little to no difference from the other Palazzo floors. With the exception of the fact that there is a "secret" elevator bank in the back of the concierge lounge (which can only access the concierge level floors in the 20's) --- I don't really count the "383 suites" @ Palazzo as a separate tower/wing, such as the Wynn/Encore Tower Suites.

Though, as I've mentioned before, the Palazzo concierge lounge is top notch.

FWIW, the last few times I was upgraded to a "concierge level" room @ Palazzo, I was NOT staying on the one of the official concierge floors. That's fine with me, as I prefer a room on floor 40+.

In addition, there is another lounge on floor 50 (in addition to the concierge lounge on 23), but that's reserved for "special people."