Meaning of “nicely” - Learner’s Dictionary

nicely

adverb uk us /ˈnaɪsli/
WELL

B2 well:

That table would fit nicely in the bedroom.
His business is doing very nicely.
PLEASANTLY

B2 in a pleasant way:

nicely dressed
They spoke to us very nicely.

(Definition of “nicely” from the Cambridge Learner’s Dictionary © Cambridge University Press)