Guests at Das Reiners rave about the breakfast, describing it as "very good," "exceptional," "extremely good," "delicious," and "first-class." Reviewers mention the wide variety of options available, including fresh smoothies, fruit salads, espresso and daily changing specials like white sausages and pretzels. Many praise the generous buffet and the attentive service with some noting that despite COVID-19 precautions, the staff still managed to make their experience unforgettable. A few minor complaints are mentioned, such as occasional shortages of certain items, but overall, guests are impressed by the quality and quantity of food on offer.