Look no further--you've found where you NEED to stay during your trip to Rome. We spent a week in this amazing apartment and could have stayed here for weeks more. As others have said, the apartment is much bigger than the pictures make it out to be--more than enough space for two. We so enjoyed sitting in the front room with the balcony door open and watching the passersby along Via de Coronari.
I have to talk about the bathroom sitch. One review mentions how the shower is in between two bathrooms, but buried the lead: TWO BATHROOMS. The design is actually pretty ingenious--the shower stall has two doors, and each door leads to a separate bathroom. Ladies, let that sink in. You will have your OWN BATHROOM. (That was a vacation in and of itself, LOL.)
On to location, which couldn't be better. You can walk EVERYWHERE. You are around the corner from Piazza Navona and an eight minute or so walk to the Pantheon, the Trevi Fountain, and tons of other locations. Maybe 20-25 minutes on foot to the Vatican and the Colosseum, and about 15-20 minutes to great restaurants and bars in Trastevere. Pretty much the only place we didn't walk to was the Termini train station--but that was no problem because there was a taxi stand with a line of cabs literally steps away. And yet because of where the apartment is situated, you actually get very little street noise.
Finally, let's talk about Jacopo and how tremendous of a host he is! He arranged for transportation to and from the airport. He met us outside the apartment, showed us around, and gave us a ton of great recommendations for restaurants/bars/attractions. He was extremely accessible the entire week and could not have been kinder or more enthusiastic about this great city. Counting the days until we can return to this wonderful space!