Steigenberger Bad Homburg
This hotel, which opened in 1883, was renowned for catering to Europe's royalty in its pre–World War I heyday, and it's still known for pleasing a well-heeled clientele with exceptional service, including 24-hour room service. Ritter's Restaurant offers breakfast, lunch, and dinner (served on an outdoor terrace in good weather), and there's a lobby bar for socializing and quick bites.