I have stayed at the Residence Inn, Hughes Center, many times. In fact, I stayed there the very first night it was open.
It is a few blocks from the strip, but can be walked easily.
This is the newer style Residence Inn (high rise).
The rooms are lovely, nice pool, great staff and they serve a GREAT breakfast.
I am staying there this weekend for the first time in a year. I will post next week and let you know how the experience was.