Participants are invited to book well in advance their accommodation in Geneva (the most convenient prices are usually found by using the most diffuse on-line search engines). The city is always rather busy for many events and late booking of the hotel room is not recommended. Some useful information can also be found on the Geneva.info website.
All hotels in Geneva offer you (upon request!) a card for free transportation in the city. A card is issued for free from the Hotel for each day of your staying in Geneva. Please ask directly your hotel.