The Holland America Line Rotterdam receives generally positive reviews for its beautiful, modern ship, friendly and attentive staff, and enjoyable itineraries. Guests praise the quality of food, especially in specialty restaurants, and the cleanliness of the ship. However, there are recurring concerns about overcrowding, reduced staff leading to slower service, smaller cabins, and a decline in some aspects of entertainment and value. Some guests also mention issues with excursions, extra fees, and internet quality. Overall, the Rotterdam is recommended for its comfort and service, but some guests feel standards have slipped compared to previous experiences.