If you travel to Rome, stay here! I've stayed at over 30 AirBnB's and personally hosted my old flat in Munich - this is without a doubt the best value for money. Matteo is a great host (offers airport pick up, customized maps/suggestions/concert recommendations, and will soon provide a cooking class as well...).
The flat:
-centrally located
-stylish & modern (with Italian flair)
-clean