If you appreciate subtlety and dry humor, and can overlook some seemingly-wooden acting, this might be worth it. I say ''seemingly'' wooden acting because in some ways, given the context of the culture and futuristic era in which this is to have occurred, a sort of bland, passionless mannerism would actually make a great deal of sense. The world is a hopeless, dull place, filled with nothing but drudgery and monotony, and no hope of things ever changing for these people. So that, while it may not appeal to a lot of movie-watcher's tastes, is actually a rather logical thing to include, assuming it was deliberate. Even if it wasn't, it worked for me.
It's very slow-paced, not an action film at all, and events are presented in a very non-linear way (scenes pop up out of nowhere, and they don't make much sense until later on in the film - that worked well for me, to maintain interest). Something similar in feel to Ryan Reynold's ''The Nines'', though lower-budget.
The visuals were somewhat reminiscent of 1990s CGI, but nice just the same, and the concept was very intriguing. Pay attention to the guide's outfits, and how the props change from scene to scene while on ''the ship'' - it's all very subtle, and this type of visual subtlety works its way throughout the entire movie.
There is full-frontal male nudity in a few scenes, but it's not gratuitous, vulgar or overtly-sexual at all. I suppose the story -could- have been made without it, but it did help add a bit of realism to certain things.
All-in-all, I think it takes a fairly rare temperament to enjoy this sort of film. If you're not sure after about 15 minutes, just watch until you've seen a few minutes of their interaction with the occupant of the 'ship', as that frames the tone for the rest of the movie. By then, you should know if you want to see the rest of it or not.
For my own part, I think I probably enjoyed this more than most people would. But if it sounds like it -might- appeal to you, I definitely recommend checking it out. :-)