Are you skeptical about opaque travel sites on which you book a hotel without knowing its name upfront? That kind of blind adventure can give some travelers pause, and yet a $10 rate is pretty compelling.

LastMinuteTravel.com has introduced a $10 Tuesday feature that offers "undercover hotels" for crazy-low rates. The first catch: As on all opaque sites, you don't find out the name of the hotel until after you've already booked it. Before then, you're given descriptions of the hotel's size, amenities, and location. Meanwhile, the $10 rate is only good for a handful of dates and, when we looked, on a fairly short list of places. The second catch: You can't book just one night at $10. You have to book a second, more expensive night, too.

Still, when we checked out the page recently, we were intrigued to see listings for Vegas, Montreal, and New Orleans.  So we tested the booking engine to see how far we could get in learning about the  "4.5 star hotel in New Orleans" without actually booking it. One hotel was .2 miles from the French Quarter, two miles from the Garden District, and featured a gym, restaurant, and outdoor pool. The clincher: a three night-stay (including two of the $10 nights) came to a staggering, almost suspicious $84 total. So how good (or bad) could it be?

We coudn't resist the temptation, and went ahead and booked. Turns out, the mystery hotel was none other than the Hotel Intercontinental on St. Charles Avenue—which, for the same dates we checked, would normally start at $109 a night. So our adventure turned out way, way better than we imagined—and we will be back on Tuesdays to come.