If you decide to book a stay at a 4-star hotel in Merino, you'll usually find plenty of amenities to keep you relaxed, such as a pool, gym and restaurant. You can look forward to excellent service and upscale surroundings. Pick a 5-star hotel and you'll get a few more bells and whistles — think concierge assistance, on-site spas and indulgent turndown services. You're likely to get extra amenities and first-class services at a 5-star stay, but both are great options for luxury guests.