I stay in a few CY a year. Mostly on my own dime on weekends, almost always for one-night stays, often on 10k/15k points, frequently near an airport or in a suburb. I dislike Fairfield, thin walls, so-so Internet, useless breakfast. There's only one Fairfield where I choose to stay, and that's in Austin at 35/Parmer because the cost is often $40/night cheaper than the Hyatt Place near my company's office.

What I care about on a one-night stay, cost being equal:
- Space in the room
- Quality of the bed
- Mini-fridge in the room
- Microwave somewhere on premises
- Bonus if they can make an iced double espresso, even if I have to pay for it

Hyatt Place generally wins that for me, especially when I add in the ability to earn stay credits towards Diamond for my full-service Hyatt stays (both paid work stays and redemption leisure stays). After that, CY isn't noticeably different than Hampton but is often cheaper, and sometimes there's a HIX that's cheaper and that I know something about (HIX are far more variable).