We were lucky to find Maison Flaminia and received a great rate, since we stayed eight nights.
The Good: Fantastic location (metro station within ten minutes, many major sights within walking distance), excellent service from the people working there. Andrea also organised transportation for us to and from Fiumicino airport, which was very useful so that we did not have to travel on public transport with large bags.
Could be Improved: The breakfast is slightly too late (starts at 0830) if you are trying to hit the sights early.