A glorious time of year to be there. It does get cold at night, though, so be sure to bring a jacket or sweatshirt. I'm not good on where to stay (I usually stay at my mom's house), but I did spend a very pleasant couple of nights in one of the casitas at 10,000 Waves a year or so ago. If you don't stay there, and you like hot tubs, it's definitely worth having a soak. And a massage. Other people will have their must eats, but our first stop is always Pascual's for breakfast. Other excellent food can be had at The Shed (lunch, New Mexican food), Mission Cafe and Sweet Shop (lunch, New Mexican food, near the capital building), Sage Bakehouse (sandwiches, cookies, bread), 315 (market-driven food, which makes fall a great time to eat there), Aqua Santa (also market driven), Kasasoba (dinner, Japanese, excellent), Harry's Roadhouse (breakfast, a bit out of town). I like Tomasita's but that might be in part because the food tastes the same as it did when I first went there 35 years ago. It may not be special, but I never find it disappointing. On the high end, I had an incredible meal at Trattoria Nostrani last time I was there. If you can find it, and it's open, try the tamales at Johnnie's Cash Store. Oh, and Roque's carnitas, on the plaza. You can get addresses and phone numbers for most if not all of these places in THE magazine (free, on just about every street corner). If I think of any others I'll come back. The other usual piece of advice for flatlanders, of which I am now one, is to take it easy on the booze until you're acclimated to the altitude.