Accommodation
We strongly suggest to looking for hotel along bus trip.
Here http://tinyurl.com/ninuxday09map you can found a map with useful information
The color line are bus trips.
The green line is the 90, form Termini station to Largo Labia, along this trip you can found Defrag_ and many hotels.
Please note that 90D is another bus line (yellow line) with different trip.
Termini and Nomentana are two rail station that can be used to/from Fiumicino airport.
Some Random Places
Cascina Palace Hotel: http://www.hotelcascinapalace.it/
Hostel Des Artistes: http://www.hostelrome.com/
Vacanze Roma: http://www.vacanzeroma.com