The apartment is extremely well located. We walked everywhere - Vatican, Coloseum, spanish steps, trevi fountain, well - everywhere.
The apartment was very clean, linens were nice and we all slept well.
I would note that for our party of 10 having only 2 bathrooms did get kind of tight at times, but that is obviously is something we knew from the description. One of the bathrooms also had a very small shower, so if you have large men in your party they will only be able to utilize the other shower. Also, shampoo and soap were very small, and there was no conditioner or lotion present so I would recommend to bring those as well. We also brought slippers and that was helpful.
The apartment had a washer for clothing, but no drier (as I believe is standard for most apartments in Rome). They provided a drying rack which some in our party utilizied.
We did not really cook so cannot comment on those items. The apartment is located right next to a bakery where you can get breakfast/lunch sandwiches, pastries and coffee, which really saved us in the mornings. The people that run the bakery were really warm and wonderful to us.
The hosts also arranged the taxi transfers for us and were really responsive and helpful. We had a few last minute changes as some parties in our group changed their itineraries and the hosts were very fast and helpful in responding.
I would definitely recommend this apartment for those who are looking for a very central location. Keep in mind that the apartment is very old, the furnishings have been updated. We really liked the charm of it.