agradable; as in enjoyable or likeable
bueno (masc.), buena (fem.); as in good
bonito (masc.), bonita (fem.); as in pretty or cute
simpático (masc.), simpática (fem.); as in sympathetic

* "nice" is a versatile word and context conveys the meaning sense

bonito

Hermoso, Bonito, Agradable...
Depends of context.

Agradable

bien. genial. cool.