The architects also wanted to create a pair of spaces that visitors using couldn't experience at home, and to offer a retreat from the busy city.
Each flat includes a kitchen, sleeping areas and a bathroom, but the contrasting finishes create starkly different atmospheres.
"Our goal in this design is to provide such special elements in order to increase the excitement and enjoyment for our guests and to let them experience things they never would in a normal home," said the architects.
One of the apartments is mainly painted white, but half of the back wall, ceiling and the entire floor are covered in wooden boards.
These line an angled indent made in the wall for a "cave-like" cream sofa topped by strip lighting.
On the other side of the room, a white dining table extends from a wall and is supported by a pole attached to the ceiling.
"The white table suspended from the ceiling creates a sense of floating mystery in the space, and the benches carved into the walls like a cave provide a sense of calm and relaxation," architect Hiroyuki Ogawa told Dezeen.
White doors that blend in with the walls on the back end of the space lead to the sleeping areas and bathrooms, which are finished with cream tiles. Glass doors partition off a shower room and white bathtub.
In the other flat, walls, ceilings and doors are covered with dark plaster and illuminated by a large window.
The floors and the kitchen island feature a matt-grey finish, while metal is used for shelving. Neon lights mounted on the back wall are intended to remind guests of the city.
Below these lights, a wooden table-top extends from a wall and is supported by a a dark steel beam. Cork stools provide seating on one side and a long bench on the other.
A step leads up to a higher level covered with a soft, plump carpet to create a comfortable resting space.
Curtains wrap two volumes occupying this floor, one of which is encased by glass to offer privacy from the main living areas.
Holiday rental site Airbnb came in at number 79 on the Dezeen Hot List, a countdown of the most newsworthy players in the design industry.
The company was founded by Rhode Island School of Design graduates Joe Gebbia and Brian Chesky in 2008, and has since expanded to include listings in 190 countries.
Designer Ilse Crawford has said that Airbnb is changing attitudes towards design by allowing people to experience stylish interiors firsthand, rather than through magazines or websites.
Other apartments designed for the rental website include a minimal Budapest studio flat by Position Collective and a colourful Barcelona flat by Miel Arquitectos.
Photography is by Kaku Ohtaki.