Beach Itineraries in Haikou and Sanya: 5 days, City Beaches Trip

Hello
we are from sweden stockholm and fly to peking3-4 days and then to Hainan7days around nov
efter Hainan fly we back to peking 3-4day
stockholm-pekking-hainan-peking-stockholm
hotell-3-4*
we should like to stay 2 mores day efter this Beach Itineraries in Haikou and SY: 5 days, City Beaches Trip``how much is for 3 single room and one souble room totally for 3 women and one man.