Yes. There is no limit to the number of properties you can enter under one account.
In addition, we support multiple-unit properties, where some information (e.g., general property description, directions, house & arrival information, etc.) is defined once for the property as a whole, while other information (such as rates, photos, availability calendar) is defined for each unit. When entering reservations, you can add one or more units from a multi-unit property to the same reservation.