If you stay at a B&B, you most often meet your hosts, who can tell you a lot about life in this area, the local sights and recommendations what you can experience in the surroundings.
When choosing a B&B as your accommodation, you get a private room, typically also with an own bathroom, as you know it from e.g. hotel overnight stays. In return, you will experience a great price saving.
If, for instance, you are planning a budget-friendly round trip at the Northwest Coast, where you prioritise to experience the beautiful nature of the destination, exciting attractions etc., then a B&B is worth considering.