My wife and I had an excellent time in Rome, thanks in large part to Alberto. The location of the apartment was excellent - just steps away from the metro and the Coliseum. Alberto was waiting for us when we arrived to show us the apartment and provide his recommendations for what to eat/see.
The apartment itself had everything we needed. The A/C was great! Sharing a bottle of wine on the balcony was also a highlight of our trip. We didn't spend much time in our room but it had everything we needed and more.
As for tips for your stay, we arrived to Rome via the Leonardo Express. Once at Termini station, we road the B line down to Colosseo. Once you arrive it's about a 5 minute walk with luggage to the apartment. There are lots of cobblestones so try to pack light if possible.
Overall fantastic stay!