Trevi's unit was well appointed with amenities for our stay, and offered a great base of operations for us to walk/cab anywhere we needed to get to in Rome. As described, the unit literally overlooks the Trevi Fountain, and you can observe it's beauty along with the hustle and bustle of visitors below (with the windows closed, the sound is not an issue at all at night). Because of its location, there are plenty of restaurants and basic shops to grab food or other items - you're also about 10 minutes away from a mall with luxury stores.
This doesn't even include the level of proactive response from Trevi, Laura, and Lumi. Between the three of them, I always got responses within an hour, and they were more than happy to help/accommodate us, every step of the way. If/when we come back to Rome, this is where we will stay.