I've stayed in many places all around the world. I read all of the reviews before booking and expected a great experience. For us, there were several good and not so good things about this apartment, I will outline them below.
The good -
-Check in was awesome. Paola was kind, on time and let us check in way before our scheduled time. Very much appreciate her flexibility.
-Paola made great recommendations on restaurants, we ate at nearly all she suggested and each were amazing
-The location is perfect. Honestly, it is the best thing about this place. Literally steps to nearly every place you must see in Rome. No need for any transportation the entire time we were in the city.
-Old and quaint building on a very quiet street with lots of character
Not so good -
-NO HOT WATER, we had a three day stay with cold water only. Pretty tough to take cold showers. We asked the host about this and asked to have fixed - they apologized with some commentary on how the condo building was switching out pipes. Never was resolved for entire stay.
-AC works in upstairs only, downstairs no AC. Probably not a big deal most of the year but when we visited it as late June and blazing hot. Really, we could only use the downstairs in the mornings while it was somewhat cool.
-Cleanliness was questionable, it is a very old building but the basics like cleaning mold from the shower were not done.
Overall - the location is great but you will sacrifice some cleanliness and comfort. I am a bit disappointed as the place has so much potential. If the owner just cleaned well and fixed the mechanicals it would have been great.