Chicago's first hotel built to meet Silver LEED certifications for its eco-friendly practices, Hotel Felix merges upscale amenities with renewable furnishings and energy efficiency. It's just off the busy thoroughfares, making it a relaxing spot to stay (with a spa), while it's still an easy walk to the action on the Magnificent Mile, and all of River North's nightlife. The environmentally-conscious will likely appreciate just how thoroughly green this hotel is, if they don't mind small rooms. While it's a central location for tourists, the Felix caters to business travelers, with its comfortable, if somewhat cramped, work spaces, and stylish meeting rooms. The nearby Dana Hotel and Spa doesn't share the sustainable pedigree, but it has similar amenities with larger rooms.