Overall, this is about as cost-effective as you will get for a large group in Vegas. Proximity to the airport, the Strip, downtown, and Summerlin is great.
Kitchen is well stocked and living areas functional. We had 2 families and there was plenty of space.
Be warned:
1. It is ON one of the busiest surface roads in Vegas. The road noise is atrocious.
2. The bedding in the property was also terrible - I can honestly say I've slept in comfier beds in budget hostels in the developing world. Mattresses were old, sheets thin, pillows aged enough to be bottled.
3. Don't use the garbage disposal unless you like getting covered in the contents