So, carbonara is something that mrs. pbiflyer is looking forward to. When I tried to find Perilli's, I found three in very close proximity of each other.
One is located at Via Marmorata, 2, Roma, Italy, one is located at Via Marmorata, 39, one is located at Via Marmorata, 71.
Which one are you referring to? I am guessing Via Marmorata 39, with this website:
http://www.trattoria-romana.it/da/perilli/
Correct?