Location of the apartment is great, you can access to main attractions in central Rome by foot, meanwhile you have alternative of walking to the other direction for metro / train / car rental at Termini, if you want to get away from the tourist crowd a bit sometimes / go to more remote attractions. The apartment area has lots of restaurants and supermarkets are close by.
The apartment itself is clean and has modern toilet and kitchen. But beware that the living room is VERY dark, and half of the lights were not working during our stay which made it even more dark all the time. You can hear neighbor talking through the wall, and noise of restaurant downstairs cleaning out their trashes, especially glass bottles, some times even late at night. The corridor light outside is always on and is on the same level as sleeping bed. This maybe a problem for light-sleepers. While we booked the apartment for 2 full weeks, we only got very limited supply (e.g. 1 roll of toilet paper). When we contacted the host we were told that's all we can get. It doesn't involve lots of money to get the supply, but you need to spare time during your holiday to buy these basic essentials, even if you are having longer stay (we actually made 2 bookings for the 2 weeks to suit our schedule, so we are paying extra cleaning fee in between, but there is no cleaning / re-stocking of supply in between).
So just be aware of the pros and cons of this apartment when you book it.