Noun
pleasantness -
the quality of giving pleasure; "he was charmed by the sweetness of her manner" ; "the pleasantness of a cool breeze on a hot summer day"
sweetness
unpleasantness the quality of giving displeasure; "the recent unpleasantness of the weather"
pleasant (of persons) having pleasing manners or behavior; "I didn't enjoy it and probably wasn't a pleasant person to be around"
unpleasant disagreeable to the senses, to the mind, or feelings ; "an unpleasant personality" ; "unpleasant repercussions" ; "unpleasant odors"
quality an essential and distinguishing attribute of something or someone; "the quality of mercy is not strained" --Shakespeare
amenity ,
agreeableness a temperamental disposition to be agreeable
enjoyableness pleasantness resulting from something that can be enjoyed; "the enjoyableness of an afternoon at the beach"
niceness the quality of nice
pleasantness -
the feeling caused by agreeable stimuli; one pole of a continuum of states of feeling
unpleasantness the quality of giving displeasure; "the recent unpleasantness of the weather"
pleasance ,
pleasure a pleasant and secluded part of a garden; usually attached to a mansion