Technically, no.
The garage is underground. You can access it from Sands Ave. There is a stop light set up there to ease entry and exit from any direction. It is the same light set up to get into the suites section of the WynnDot.
For those that might get confused with roads, Sands Ave tuns into Twain as you go east. Sands Ave turns into Spring Mountain as you go west.
If you want to go by visual landmarks, Sands Ave is that road that is between the WynnDot and Palazzo.
If you are going north on Koval, it will T into Sands. Go left and be ready for another left at the next light into the Palazzo garage.