Chiming in again - I do not recommend La Posada. It has been sold recently,hopefully a good thing, but is still managed by the same company. The service is truly indifferent and only if you are willing to go up in room category to something like a suite casita would I even consider it. Plus you have to pay for valet parking, they assess a "resort" charge, etc.
The Palace restaurant was taken over and redone by the guys who own Geronimo and is now worth a try, although it is expensive. They kept the feel of the red velvet, but now it is ozzing in style. Across the street is another one of their ventures, Swig, a very hip bar with multiple rooms and fabulous ASian tapas. Wednesday is $5 martini night.
September, October is one of the best times to come. If you come in late September the Aspens will be turning gold in the mountains. It is a beautiful drive (about 30 minutes) up to the ski area. They run the chairlift during peek aspen season - you can ride up and down or even better, ride up and hike down the ski runs. Stop on the way back at Ten Thousand Waves, A Japanese spa in a lovely setting.
Also, at the end of September (this year Sept 21- 25) is the Wine and Chile Fiesta -
http://www.santafewineandchile.org/ - with many wine and food related seminars and tastings, chefs dinners with wine pairings and the big event is the Saturday afternoon food and wine tasting, held outside at the SF Opera with all the local restaurants serving tastings and wineries all over the country (and world?) serving tastings. It costs about $75-100 pp and is just fabulous.
more later....
Leslie