informal
casual
approachable
chatty
communicative
companionable
convivial
double-ender
gentlemanly
good
happy-go-lucky
hatchet-faced
jocose
jocular
light-hearted
neighborly
off-the-record
old-timey
sociable
straightforward
unceremonious
unconstrained
unmaidenly
unreserved
unspoilt
upmarket