The unit is on the edge of the developed land next to Tucson Mountain Park. We did multiple hikes from the Starr Pass Trailhead (which we could walk to from the unit) that ranged from relatively easy to longer hikes with lunch and lots of water. I bird, and the best birding of the trip was from the porch of this unit (Gambles Quail, Phainopepla, Verdin, Cactus Wrens, Gila Woodpeckers, Curved-billed Thrashers, a Swainson's Hawk in the bush, Greater Roadrunner, Vermilion Flycatcher, Say's Phoebe, White-winged Dove, Costa's Hummingbird...). And, the location has a wide range of solid SW restaraunts under 20 minute drive - fantastic food choices. We also liked that the kitchen was well stocked with good knives, even LeCrueset bakeware and coffee cups.
The back patio, with the umbrella for sun protection, was really an extra functional room for us - we used it every day. It has a small area before the road, so you feel some isolation from others and it is peaceful. I had originally wanted to stay closer to the Saguaro National Park, but we drove to the NP one day and I think the trails right out the back door of this unit are as good as those in the National Park as long as you want to hike a bit.
As a side note, we don't golf, but there is ready access to 3 9-hole courses, and the key cards worked for the pool that we would have used if we were traveling with our kids when they were young that also included access to a weight room with a wide range of machines but no free weights.
We would stay here again if we were traveling back to the Tucson area!