Tips from a friend who recently flew from NY to Rome:
1) Get a PCR test from a medical center that specializes in travel. Better 48 hours in advance rather than 72 in case flight gets delayed. If they offer it, pay the $35 extra for the official letter stating that you can travel. Everyone who checked my stack of tests and qr codes put the official letter at the top without question 2) fill out Italy forms ahead of time and print your barcode documents. It is hard to find them online when at the airport. The printed documents sped me through the line while everyone was trying to get wifi on arrival 3) make your appointment for a rapid test in Italy ahead of time then print out your reservation, also sped me to the front of the line 4) do not panic when they take your passport. Rapid results are rapid, even in Italy. 5) hotel will ask for your rapid test and appreciates Vaccination verification upon check-in for their records.
Overall, the country is very quiet, many shops and businesses have not opened yet. If you want Rome to yourself, now is the time, but not much else to do... no special events, music, no nightlife at all. July may improve but Fall will be better, 2022 back to normal we hope!