MSC Seaside receives mixed reviews from guests. Many praise the ship's beautiful design, excellent entertainment, and some standout service staff. However, common complaints include small cabins and bathrooms, inconsistent food quality, crowded public areas, and issues with customer service. Excursions and port times also drew criticism, as did added charges and value for money. Overall, the ship offers a visually impressive experience with great shows, but falls short in several key areas of comfort and service.