Keeping in Scottsdale, therefore walking or a cab may work for some, consider: Talisin West, Cosanti Fondation, Scottsdale Historical Museum, Scottsdale Center for the Arts, The Borgata of Scottsdale (shopping in "Tuscany"). Lots of trails for hikes. Phoenix opens up numerous doors for activities including a very good Zoo.
Scottsdale has a free Trolley/downtown shuttle 480-970-8130. A couple of the stops on Scottsdale Rd are , I believe, very near your hotel. this might save you some money.
February starts 17th the Scottsdale Arabian Horse Show, continuing thru your stay.
Don't live there so that's all I have to contribute, but we have been there a few times.
Have a great time.