Hibbertia scandens or the Guinea Gold Vine is a soft stemmed climber that has broad, dark green leaves and big, open-faced, yellow flowers with powderpuff centres that look like large buttercups.
They are great as a climber over pergolas or can easily be trained up walls on a trellis. They will also scramble across rockeries and beds as they are not natural climbers (only if you encourage them).
Guinea Gold Vine is very good in seaside settings as they don't mind salty air, they can also withstand a light frost and short periods of drought.
They need plenty of sun, a little shade won't be a problem, but they are most vigorous with all day sun in a sheltered spot e.g. they soak up heat happily.