In Munich airports they have installed a couple of NapCabs. Minimal charge € 30 per stay of 3 hours. A bit less classy than the Sleepbox 01 of Moscow’s Sheremetyevo International Airport. Napcabs are actually prefabricated boxes at the Munich Airport Terminal which has simple provisions like a bed and a work desk which you can rent for as short as 3 hours or for as long as 12 hours. You basically purchase some time via a touch screen using your credit card. The concept is quite familiar if you know Day Stay and Yotel capsule rooms but without the other person and the restroom.