My family stayed in a castle during our epic multigenerational trip. Kathleen WillcoxMy group of 20 went on a multigenerational trip to Austria and stayed in a castle for a week.Our stay cost about $151 per person per night, which felt surprisingly affordable for all we got.We had a great time and especially enjoyed exploring the spacious grounds and castle amenities.The average price of a hotel in Austria tends to be over $200 a night — even higher if you want a five-star experience.But if you get a group of 20 together and everyone chips in, you'll each pay around $151 a night to stay in a castle for a week.