Per day pricing: this is the most common pricing model. Every day of the year can have its own cost.
Per Day by Length of Stay: this pricing model is often adopted by Apartments, Villas and B&Bs. For example, 1 night 80€, 2 nights 150€ and so on.
Per Occupancy: if you use different rates depending on the number of adults. You can adjust the costs of the rooms depending on the number od adults that occupy it. For example you want to rent a double room to a single adult.
Children: the children can be charged depending on their age.