The 90-room luxury H2otel in Unhais da Serra Portugal is a a stunning mountainside resort that offers majestic views, a restaurant focused on local foods, a massive spa complex, and a wide array of activities for nature enthusiasts. Made of glass, granite, and wood, the architecturally distinctive property, part of the H2otel chain, has a modern atmosphere that blends into its natural surroundings. Tastefully decorated rooms have flat-screen LCD TVs, aromatherapy toiletries, and beautiful views. The only real downside is the remote location, but then that's also part of the appeal.