: a building used for guests (as on an estate) especially : a house run as a boardinghouse or bed-and-breakfast.

A guesthouse is a small building, close to, but not attached to the main house on a property. it functions in the same way a guest bedroom does, and in some cases has has full kitchen and living areas.

In some areas of the world, guest houses are the only kind of accommodation available for visitors who have no local relatives with whom to stay. Among the features which distinguish a guest house from a hotel or inn is the lack of a full-time staff.

Generally B&Bs are smaller establishments than guest houses. A Bed & Breakfast is usually up to 3 guest rooms, while a guest house can be 4 even up to 16 or more rooms. In a nutshell, most B&Bs caters for maximum 6 guests at a time.