Homewood Suites just south of the airport (Gillespie Street & 215)
Free:
Airport shuttle, grocery shopping service, hot/cold buffet breakfast, WiFi, parking, cribs/infant beds, sofa bed
Kitchen:
Cookware, dishware and utensils, microwave,full-sized refrigerator/freezer
Most importantly: Swimming pool and air conditioning. Nothing else needed for Las Vegas during the summer