Morning Glory vines get started a little late in the season, but they take up a whole lot of room...they also reseed, so they can be a pest to get rid of if you get them started...but I love them.

dutchman's pipe has a similar, heart-shaped leaf, though the blossoms are much less attractive.

there are a number of roses that climb (they will need stronger support - the lattice used for fencing works great) and a whole host of perennial vines...

trumpet creeper is not one of them. don't believe the hype - this is not a plant, it's an undercover agent for planetary invasion. it makes Kudzu look like a wimp, and ivy look like a slow-poke. the only safe way to grow trumpet vine is in an enclosed pot, on a concrete slab, in the middle of a parking lot, where it can grow up a flag pole or something. this vine will pry apart the siding of your house, worm its way into the attic...and pop up suckers 10 feet away, in the neighbor's yard, the year after you plant it.

seriously.

blinds are another option - especially if you're going for a tiki theme, burlap can be made into perfectly servicable 'roman' style blinds that give you some view outside, while providing a fair bit of shade. there are also fabrics that mimic the rustic open weave, and don't decompose so quickly.

My husband and I came upon a bamboo grove that was being bulldozed (through craigslist) and harvested enough to lash panels together and 'side' our porch in burlap, and make a cover for the old trunk we were using as a bench - which really makes anything else we do to 'tikify' the place easy - really nothing more than tropical floral print cushions on the wicker chairs :) to go with the 'drink umbrella' party light strings.

I think the cabana/tiki idea is great. What about Eucalyptus or Teak porch furniture? Could you simply make curtains out of an outdoor, or at least durable, fabric? Hang them from the top with elegant "tie-up" strings so you can raise them when you want to let the sun shine in, and lower them for a bit of privacy. Only installing them on the most exposed side may help you feel a little less like you're in a tent though. And, though this may seem to retro, I also thought about a bamboo (or bamboo inspired) natural looking bead curtain. Hung loosely, it would still allow light in while obstructing any clear views? Too crazy? maybe. =]

Once we finished with the construction of the wall, I wanted to add those final touches, the following site has many beautiful patio and garden products www.WindChimesGarden.com. Outdoor lanterns and garden candle cones that create a warm, relaxing environment. If space permits, fire bowls are great for those late summer nights enjoying time with friends or relaxing alone.

Whatever you decide, take time in making your selections so they will suit your lifestyle.