An absolute pleasure staying with Monica!
Honestly the pictures do not do it justice. It's a great space and a perfect place to rest after a day of walking or a night of fun.
This neighborhood is hot hot hot, with everything you need literally just a door or two down or maybe a whole block, but I doubt you'll need to walk further.
The apartment is very clean, comfortable and warm. I had to turn the heat off most nights, a surprise for January. Plenty of toiletries available, many pillows (I always want pillows), extra blankets, towels, washer, dishes, everything you need.
And Monica herself is just wonderful. She is very friendly, helpful, flexible and made my first airbnb experience a joy. I can't imagine staying anywhere else in Roma!
I'll give you a hint. If you want to eat at La Taverna on via Della Madonna, and believe me you do, you're going to want a reservation. ;)