Synonyms for Folksy:

adj.

casual (adjective)
easygoing, informal.
earthy (adjective)
simple.
folksy (adjective)
unpretentious.
homey (adjective)
friendly, relaxed, intimate, comfy, warm, snug.
informal (adjective)
ordinary, congenial, frank, straightforward.
natural (adjective)
candid, direct.
offhand (adjective)
casual.
simple (adjective)
unadorned.
sociable (adjective)
amiable, amicable, companionable, friendly, easygoing, courteous, neighborly, convivial, gabby, gregarious, gracious, chatty, affable, sociable, talkative, hearty, hospitable, congenial, garrulous, genial, vivacious, cordial.
succinct (adjective)
direct, uncluttered, casual, ordinary, honest, informal, unadorned, clear, outspoken, frank, prosaic, blunt, unpretentious, stark, candid, intelligible, unpoetical, bald, Plain-spoken, simple, straightforward.
unpretentious (adjective)
prosaic.

n.

aesthetic, avant-garde, camp, baroque, artsy-craftsy, campy, artistic, accessible, abstract. comfy, relaxed, snug, salubrious, luxurious, warm, intimate, comfortable, civilized. folksy (noun)
informal, cracker-barrel, homespun, rural.

Other synonyms:

comfy, salubrious. civilized, relaxed. snug. intimate. comfortable. Other relevant words:
homespun, relaxed, intimate, cracker-barrel, salubrious, rural.