It is not publicly known which hotel the Kardashians stay in when they visit Miami. The Kardashians are known to stay in luxurious accommodations when they travel, and there are many high-end hotels in Miami that they could choose from. Some of the hotels in Miami that are popular with celebrities include The Setai Miami Beach, Faena Hotel Miami Beach, and The Four Seasons Hotel Miami. However, it's important to note that celebrities often prefer to keep their travel plans and accommodations private, so it's difficult to say for certain where they stay.