Reservations If you have a query or want to make a reservation just mail this adress: stay@hostelharmonia.com or call (0055 21) 25234905. The information we need is first and last name, dates and estimated check-in time. We don´t take a deposit but a reservation is binding. Please contact us if you need to make a cancellation. We prefer english, swedish or portuguese but german and spanish is also possible to use.