Re: save yourself money
I'm staying at the Bottoja Atlantico. There is another one there too.
I dont' know Rome, but from what I can gather I should stay within .5k of the Termini central station. This means I can get from the airport to the hotel and back without getting ripped off in a taxi!, plus you are in central Rome and walking distance to most stuff.
I found octopustravel.com, travelocity, hotels.com to be useful for research. I made a shortlist of hotels in the area that looked nice and then double checked the reports on tripadvisor.com it was invaluable! I had picked a decent hotel but all the reports were terrible.
Also, I think tripadvisor allowed me to input my dates and it checked 6-7 websites to get the cheapest price. Or maybe it was travleocity. Saved about €50 that way.