Amenity is something on the attractive, pleasant or desirable side of life. In legal parlance, amenity is the location, view, access to water courses or lakes, etc. which add to the desirability of a tract of real estate.
When a right consists in restraining the owner from doing that with, and upon, his property which, but for the grant or covenant, he might lawfully have done, it is an amenity or negative easement. [Chapman v. Sheridan-Wyoming Coal Co., 338 U.S. 621 (U.S. 1950)].