Okay, I'm not rating Wingate by Wyndham Denver Airport as a four-star hotel, I'm giving it four stars as a hotel by the airport that you might have to book on the fly at the last minute because your airline fouls up your flight so bad (thanks, Southwest - you guys are knocking it out of the park these days, aren't you?).
As a hotel near the airport that you might have to book on the fly in an emergency, the Wingate by Wyndham Denver Airport is a diamond in the night. It's not fancy in any way, but the room was equipped well (mini fridge, microwave, coffee maker, cold AC, desk, bench, decent shower), the wifi was great, the location had walkable restaurants and sundries stores, comfy bed and mostly quiet area, there was breakfast and an airport shuttle. And that room you get is going to be CLEAN - holy smokes, on par with the snootiest places we stay. (Props to "Dolly," the housekeeper who cleaned our room before we stayed.) Front desk personnel were on-it and interested in things going well for guests. And prices were completely reasonable.
I'd absolutely stay here again - except I'm going to try to never, ever, ever fly into DEN again as long as I live, so we'll see how that goes.