Be REALLY careful. There is an Extended Stay hotel down in south Scottsdale that is a
real dive! 
We booked a room there once, thinking it was part of the real Extended Stay Hotel chain. This particular hotel is located in an area of town with pawn shops, etc. We knew we were in trouble when pulled in and there were bars on the windows. Anyway, we got our room, opened the door and took one look (and one smell

) and turned around to get our money back. It was really BAD! Turns out, there was a whole line of people in front of us getting their money back, too.
Anyway, this hotel had 4 stars on the travel website. I reported it as false advertising (that was about a year ago) and it's still showing up with an excellent rating.