Apartment located in a great place of old living area and you can enjoy truly local neighbourhood. If you want to live for some time like a real Italian - it's a good choice.
Couple of things you need to consider - first, the apartment located almost at top of a hill and sometimes you will need to reach it by stairs. Public transport is available to bypass walking, but its schedule sometimes is off because of long period or traffic jams.
In a turn, living on a hill gives you really great views on city of Rome (when you going outside).
Second, apartment located at half-basement level. From one side, during a summer - it's good idea and makes it more cooler place. From the other side - if you arriving at cold season, you need to make sure that the host will enable heating in advance. When we arrived at the and of March it was very cold in the apartment and it took about 2 days just to got comfortable temperature inside.
Generally, this apartment has all you need to stay in a great place. Especially if you like hills, views and walking.