a small building in a garden (eg a folly or a shed)
a small house in a large garden
a house built under the provision of special legislation (usu. in Scandinavia)
Broadway Tower, England The folly at Wimpole Hall, England High Service Water Tower (1895), Lawrence, Massachusetts. ... An Australian Hay Shed A shed is generally a modest structure, usually constructed of wood in a back garden or on an allotment, used for storage and as a workshop and very often as a retreat in which to relax and pursue hobbies, especially gardening and light engineering. ...
The GardenHouse is a private one-bedroom cottage located on Orcas Island (in the San Juan Island archipelago); Orcas Island is approximately 80 miles north north west of Seattle, Washington.
The GardenHouse is a second floor guest quarters, with cathedral ceilings, dormers and lots of light.
Unlike the GardenHouse, more expensive cabins don't have a hot tub, don't have exclusive beach and shore access privacy for just one guest party, don't have a garden where there is a standing offer for guests to make their own bouquet of flowers or pick ripe fruit off the trees or bushes or vines.