The Lovers Deep offers a hide-a-way for the super rich. A couple can rent out this entire sub, which is only about 40-feet long and enjoy the high-life treatment.
Personally, I think this is pretty awesome, if you are not super claustrophobic. If you are, this might be your personal hell. I am actually surprised this has not been around for longer, and is not more common...It's probably because the price is stupid high. I understand something like this will cost a pretty penny, but nearly a million for two people (they require at least a two-night stay) that's steep!! And the majority agree...they have yet to book any love birds.
But if you are super rich and feel like dropping nearly a million for you and your significant other, you can book your trip here =)