It is highly recommended to book a hotel for the period of your attendance of CIA 2007 in Delft as soon as possible!
The following list of subjectively selected hotels could serve you as a first aid for your hotel booking. Each of these hotels is located in the city centre. Please note that, as usual, for some hotels, their availability and rates provided at the respective web page on line may differ significantly from those provided on request via phone, or e-mail.
There are, of course, other differently rated hotels and B&B guesthouses available in Delft. You may want to use e.g. tripadvisor for searching.