http://www.routard.com/guide/code_dest/rome.htm The essential.
http://www.romeguide.it/FrameSeting.html Ressources about Rome: Restaurants, hotels, bed&breakfast, museums, ...
http://www.fra.cityvox.fr/guide_rome/AccueilVille Agenda, guide
http://www.sleepingrome.com Solutions to sleep in Rome,  from the hotel to the Bed & Breakfast
http://www.lcdm.it/hotel_Rome.htm Some hotels in Rome
Usefull informations about Rome
http://it.wikipedia.org/wiki/Roma Rome open encyclopedia Wikipédia