Quintessential Quidnunc
Starting with what? Also, depends on what you call nice.
There are no Tagalog word that starts with letter Q. In Filipino alphabet there is no letter Q.
Kindhearted is a nice word. Knowledgeable is a nice word.
Questions
Harlequin.
quart
quick
qi
quote
queenly
LustreLoveLikeLimitlessLovelyLadyLimelightLusciousLucky
The word could be quietness, quickness, or quirkiness.