Rue Juste-Olivier 22, 1260 Nyon (4th floor)
This building is across the street from the Nyon train station.
This building is also known as "Parking Gare de Nyon" (follow the signs) as it is a parking house with offices on top. Elevators from the parking house do not go to the 4th floor without a card. Take the elevators from the main entrance. Also, please note that the door on the 4th floor (glass door right after the elevators) may seem locked but it is in fact open on weekdays between 7 am and 9 pm.
If you have a large car, the parking spaces may be too small in the building. The next closest parking is at "Parking Perdtemps".