Ben B.
Yelp
This is a really gorgeous place, but it's a pain to get to.
You'll need to take a boat to Lenno. Get off and walk along the water. After a 15-minute walk, you're faced with a choice: take a tiny shuttle boat to Villa del Balbianello (I think it was €5/person), or go for a bit of a hike. Only you can gauge your stamina. If you're crunched for time or you don't want to get sweaty, take the shuttle boat. Just wait by the sign and it'll come around.
If you don't mind an uphill walk, the trail awaits. It's not super strenuous, but you're not really rewarded with beautiful views or anything. It's mostly green, mostly uphill, though there are some downhill sections. It's more of a utility road than a trail.
When you arrive at the Villa, you can either pay to enter the garden only or take a tour of the home. If you are a "Star Wars" nut, nothing was filmed inside the house. You can see all the locations in the garden. (Anthony U. is wrong.)
Bring your camera because this place is gorgeous. Lots of greenery and killer views everywhere. The number of tourists makes it hard to get a photo without someone else lurking in the background, but it's a hazard worth enduring.
If you do take the (overpriced) tour of the home, there are a few treats. My favorite was the sheer number of secret passageways. Lots of hidden doors and stairways. The tour guide was less than enthusiastic. Basically, the house belonged to a rich kid who sold his parents' business and traveled the world exploring. Inside are all the trinkets he collected from various places.
As for the "Star Wars" stuff, it's pretty easy to recognize the site of Padme & Anakin's first kiss and wedding - it's the same spot, shot from different angles. If you go around sunset, you'll get a shot that very closely mirrors the end of "Attack of the Clones." There's also the beautiful spot with the archways where Anakin stood after his nightmare. As near as I can tell, those two locations are the only ones used in the film.
When you're done visiting, you can either make the mostly downhill hike back or pay a few euro to speed back on the boat. It's pretty easy to find where the little shuttle docks and you'll pay the guys on the boat in cash.