Casetta is a beautiful place, wonderfully decorated, in a great neighborhood (Montrealers, think of Pigneto as Mile-End with more street art).
Sara was very nice and provided great location recommendations.
The location is great, direct tram to Roma Termini and buses to most major attractions, and the neighbourhood had plenty of delicious restaurants.
Air conditioning, WiFi and a private yard with luxurious plants make it a great place to stay! Highly recommended!