Avalon Waterways receives overwhelmingly positive reviews for its river cruises, with guests praising the attentive service, delicious food, comfortable accommodations, and well-organized excursions. While most travelers found the experience exceeded their expectations, a few noted issues with cabin temperature during hot weather and some found the food or excursions less than ideal. Overall, Avalon is highly recommended for its professionalism, ship quality, and memorable itineraries.