If you decide to spend your vacation at a 4-star hotel in Downtown Barcelona, you'll typically find loads of conveniences to ensure you're relaxed, such as a pool, gym and restaurant. You can look forward to excellent service and upscale surroundings. Opt for a 5-star hotel and you'll have access to a few extra perks — think around-the-clock concierge, on-site spas and nightly turndown services. You'll most likely get extra amenities and premium services at a 5-star getaway, but both are terrific options for luxury guests.