Stayed here on my honeymoon and probably should have read the description of "cozy nest" a bit more thoughtfully. The apartment has a great location, it's 2 minutes walk from the Pantheon! However, it's a 3 level apartment with a shower, toilet, and bedroom on 3 different floors. Many apartments are like this in Rome, I'm aware - but we had to leave our suitcases in the main entry area as there was no other place to open them throughout our stay. Also, the main door is right outside the indoor garage for the building housing bicycles and some trash containers.
We were so busy sightseeing during our trip that we weren't in the room that often but we would have been more comfortable in a bigger apartment. Keep in mind we are not prissy travelers but this was a very small place and for my 6ft husband it probably wasn't the best choice. There was also a very musty smell in the kitchen that smelled like there is a drainage problem. Once again though if you're willing to look past this for a prime location it would be ideal for you.
Marlene was VERY helpful throughout our stay and responded quickly if we had any questions. She also made arrival to the apartment very easy which I appreciated, her instructions were very detailed. I would be open to stayed at another one of her Airbnb locations, but this wasn't the best fit for us.