Tucked away somewhere downtown (where you can blink and miss the parking lot entrance), this 24 Hour Fitness is fairly impressive for being very small. As others have mentioned, the equipment is newer but there is less of it (overall). While there are only two benches (incline and flat), there is a full range of dumbbells, a squat rack and a Smith Machine. This is probably not the ideal gym if you feel you need "space"; this is probably the ideal gym if you are in town, staying somewhere in downtown Vegas.
Parking is validated for 2 hours, and your car should be safe since this 24 Hour Fitness is located adjacent to an IRS office (lol). The parking lot is non-human automated so there's no room for wiggle-room: either your parking is free, or it's $2 or $3 for each additional 30 minutes. Be efficient about your workout.