I stayed at this hotel recently. My notes are nowhere near as detailed as JDiver's excellent report above.
Check-in was simple. People working the front desk were efficient and reasonably friendly.
As a diamond I got comps for the breakfast buffet. The food was fresh and tasty, though a crush of guests who arrived 5-10 minutes before us meant that we had to wait in line the first time through.
The location is convenient to I-5 but is on the southern edge of town. You'll have to drive a few miles to get to most restaurants and points of interest in Redding. The new Hampton is more centrally located in town but has always been slightly more expensive when I've searched.
Another HH choice in the region now is the Hampton Inn & Suites Red Bluff, about 25 miles south. I've stayed at this hotel a few times recently and enjoyed it. I don't recommend it for people whose business is IN Redding, though if you're looking for a way-station along I-5 or a base of activity while visiting someplace like Lassen Volcanic National Park it's a reasonable alternative.