George Costanza would have definitely approved of this desk that doubles as a bed. 

The desk's mattress folds down and one side can be lowered for extra space for the pillow. 

Unfortunately, the award-winning item - created by a Greek company called Studio NL - is just a prototype and not yet available. 

The Greek designer Athanasia Leivaditou said she got the idea from college, watching exhausted classmates sleep in makeshift beds.

Of course, all "Seinfeld" fans remember the classic episode in which George, while working for the Yankees, turned the bottom of his desk into a spot for the perfect midday siesta.