When Aya Nakamura asked a Tokyo hotel if they had a spare bed maybe she should have been more specific.

The professional window cleaner spent last night 'sleeping' in a bed suspended half way up the Sony building in Tokyo as a PR stunt to raise awareness that many of us get too little sleep.

She abseiled into the specially constructed vertical bed in the evening and back out again the following morning.

Nakamura found the experience relaxing saying: "I was yawning and I actually almost fell asleep because it's such beautiful weather. It's so warm and it feels so good."

Watch the video after the link.