I just had the pleasure of spending a total of 5 nights at hotel grifo. I must say that this has been one of the best hotel experiences I have ever had. The staff at grifo exudes class, they are true professionals.
The rooms were always kept clean and the breakfast was more than enough to get your day started. The hotel is a 10 minute walk from the Colosseum and Forum, most importantly it is located a few minutes from Cavour metro station. Once you have metro access you can pretty much get to anywhere in rome. Rosa, Alessandro, and Louigie were always very helpful and attentive to our needs.
I highly recommend hotel grifo and would give it 10 stars if I could. With me and my family, hotel grifo has clients forever.