The principal difference between a 3- and 4-star hotel in La Merced will be the level of service and access to creature comforts. Three-star hotels are usually more economical and come with the services and amenities required to be comfy, such as WiFi, breakfast and a gym. You can count on a little bit more at a 4-star hotel — think upmarket furnishings, luxury bathroom products and extras like on-site spa centres.