You can't get a much better location. Literally, when you step outside, and face right, you'll see the Coliseum. My family and I went during one of the hottest weeks in Italy that summer, and I couldn't imagine sleeping without having the luxury of air conditioning. Highly recommend making sure air conditioning is available if you're traveling around Italy in July. All in all, she is a great host; very organized and reached out to me well before the date to make sure I knew how to get there. Also, if you stay, be sure to go to her recommended restaurant. They do daily specials based off of seasonal produce - we had sauteed porcini mushrooms, which could stand its own as one of the best dishes we had in Italy.