The rate seems to me to be insanely expensive for what you get. For the price of two or three long stays, most FF elites could purchase a one-year lounge membership. Not only that, there are other airside retreat-type spaces in other parts of the world that give you much more for much less. Reading this thread I thought of the KLIA airside hotel in the satellite terminal at KUL:

http://www.klia.com.my/index.php?ch=95&pg=291

A six-hour stay in a standard room with king bed, TV, bathroom /shower, access to fitness center, etc. is $42. Upgrade to a "suite" (really just a larger room) is $69. It's pretty nice. Even taking the value-for-money differences between countries into account, it makes these Minute Suites look like non-starters.