Congrats on having some time away!
February (even late February) is still winter here, so you could get sun, ice storms, major blizzards, heavy fog, and just about anything else you can imagine.
I'm highly partial to Crested Butte, and you may be able to fly directly into Gunnison airport. It's IN the mountains: in a valley basically surrounded by mountains. The snow at the ski area has been pretty horrible so far this year, so you may be able to get a deal on a place. Try for staying in Crested Butte town, not on the ski mountain (unless you're looking for ski in/ski out options, which you don't need because you're not taking your kids!) You can do hikes (snowshoe, or cross-country ski -- there are places in town to rent you the equipment and point you toward appropriate trails) and a surprising number of excellent restaurants. There are lots of lodging options, but if it were me, I'd aim for a B&B-type place with some common hanging-out areas.
Whatever you decide, hope you have a great trip!