For hotels in big cities like New York, Chicago and San Francisco that are business travel hubs, Fridays and Saturdays are considered off-peak, says Jill Rosenberg, manager of groups and executive travel services for AAA New York. On the other hand, weekends can be peak times for popular tourist destinations. If you're traveling to, say, Northern California, you'll get the best deals on accommodations by staying in a wine country B&B during the week and a San Francisco boutique hotel on the weekend. Many hotels have started offering last-minute or day-of discounts via social networking sites, so keep an eye on their updates. If you're already booked and you see a better rate, many will honor your discount at the front desk (and some booking agencies, like Hotels.com
, will do the same).