[bav]

Of these three I'd pick Excalibur based on location.

Stratosphere is the bottom of the barrel. There's a reason it's cheap. It's next to nothing, neighborhood is bad, yaddayadda. But it has beds and locks on the doors so if you have a car and don't mind driving to get everywhere, it'll work.

Excalibur is a small step up, probably, and the location is far better. Its neighbors are Luxor, Tropicana, NYNY, and MGM diagonally.

Luxor is south of Excal and farther from other stuff. Luxor is next to nothing except Mandalay and Excalibur.