I just stayed at the Eden after spending a week in an apartment in the Campo di fiori area. I liked the hotel for its service and amenties, but I felt like it was a sterile part of Rome. TH said it would be worth taking the 116 bus back to the centro just to get coffee and pizza a taglio, the stuff around the villa Ludovisi, Spanish steps and via veneto area is awful.
When we walked up towards the via veneto and saw the Westin Excelsior location, we were happy we were at least at the Eden.
Oh, the windows opened, that was also a plus.