The Collaborative International Dictionary of English v.0.48:

Nicely \Nice"ly\ adv.
   In a nice manner.
   [1913 Webster]

WordNet (r) 3.0 (2006):

nicely
    adv 1: in a nice way; "a nicely painted house"

Moby Thesaurus II by Grady Ward, 1.0:

50 Moby Thesaurus words for "nicely":
   accurately, aright, benignantly, benignly, capitally,
   conscientiously, correctly, decently, decorously, exactingly,
   exactly, excellently, exquisitely, famously, favorably, fine,
   finely, fitly, fittingly, fussily, good, humanely, humanly,
   in detail, justly, kindheartedly, kindly, meticulously, minutely,
   precisely, properly, punctiliously, punctually, refinedly, right,
   rightly, rigorously, royally, scrupulously, softheartedly,
   splendidly, strictly, tenderheartedly, very well, warmheartedly,
   warmly, well, with exactitude, with great nicety, with precision