The apartment is large and in an excellent location. As an architect I could appreciate the creative interior design choices in which glass and uplighters were used to accentuate the stunning ceilings, including one particularly beautiful hand painted section.
We visited during early winter and found the temperatures inside to be absolutely perfect.
You will not find a better location: close enough to divide ones days into morning and afternoon/evening excursions with lunch and dinner enjoyed at the apartment. For those that enjoy eating out there were great restaurants close by, and eating at home was easy thanks to being so close to the Campo dei Fiori market and decent supermarkets.
The kitchen is equipped with enough pots and pans etc, and the host was extremely responsive to providing extra kitchen items that I felt were lacking. If you are a serious chef however, you might find some items still lacking so I suggest you check your requirements with the host in advance.