This page will list hotels that hawe offered a special rate for LibreOffice Conference attendees. The conference organizers are not anyhow associated with the hotels, which are sorted by distance from the venue by metro.
Rome offers much more lodging options. If any of the listed hotels doesn't suit you, just use booking websites such as booking.com to find the best suited accommodation for you.
Please note, each attendee is responsible for booking his/her hotel room!