Since nobody has said anything, I'm going to post a really brief review here. This is mainly to give you an idea of what the heck you're looking at, rather than eloquently express my opinion. Consider it a placeholder until someone comes along and writes a real review.
So, Elf 17 is an 80's OVA that is rather goofy and doesn't even try to make sense. The point to watching it is nothing more than enjoyment. If you want to relax to something lighthearted and fun, this might be for you. If you're seeking depth or originality, then stay away from this title at all costs.
it involves a few characters who travel to another planet and cause trouble by stealing their holy wine. The protagonist is apparently an elf who can fly, the male foil is some guy in a mech suit (he even sleeps in the suit!), there is a prince who's apparently just here to enjoy the spectacle, and a traitor taxi driver. It's nothing more than a mish-mash of cliches, without even the slightest attempt to explain it.
The art is surprisingly good considering how obscure this title is. You won't be let down on that point. The music is mostly notable for the awesome ED.
And.. that's it! Not much more to talk about really, considering its short length and subject matter.