Sushisen is widely acclaimed for its exceptional Japanese cuisine, fresh ingredients, and a welcoming atmosphere. It's often recommended as a must-visit in Rome for both traditional and fusion Japanese dishes. Over 90% of reviewers praise the food as delicious, high-quality, and fresh, especially the sushi and sashimi. The omakase menu receives particular commendation for its subtle flavors and presentation, with around 50% highlighting the variety, including vegan and non-seafood options. The conveyor belt sushi is noted as a fun experience, suitable for families and friends. Roughly 85% of guests report excellent, professional, and attentive service. However, approximately 20% note issues such as unpolished wine glasses, unavailability of certain menu items (including omakase or specific desserts), or confusion/rudeness regarding booking confirmations and entry times. Around 15% of reviews suggest that while overall quality is high, some premium dishes may not justify their price, advising guests to stick to classic items for better value. Minor food critiques (around 10%) include sushi rolls being too large or having too many ingredients in fusion dishes.