MSC Seaside receives mixed reviews. Many guests praise the ship's beautiful design, excellent entertainment, and some standout crew members. However, common complaints include small cabins, repetitive and bland food, inconsistent service, crowded public areas, and issues with excursions and port times. While some found the cruise to be a great value and enjoyable, others were disappointed by service lapses and extra charges. Overall, the ship offers a visually impressive experience with lively entertainment, but falls short in food quality and customer service for many travelers.