Wayne,
Don't stay at stratosphere, seriously. It's in no mans land in between the strip and downtown and your well-being is in peril if you stray 100 yards away from the property.
They have a great restaurant on the top floor that rotates (Top of the World) that has a great view of the strip and a few good 'rides'(rollercoaster, slingshot, a relatively new one that got stuck a while ago that throws you out over the edge of the hotel), but you don't want any part of that 'hotel', especially with your wife along.
It might go for like 50 a night, but there's a reason. It's horrible.
Decent low-priced options on the strip are Imperial Palace, tropicana, flamingo, harrahs....at those places you'll be in a good to great location, you'll have clean rooms and you'll be safe...unlike the friggin' stratosphere.