Apartment Nariman is nice and conveniently located (the center can be easily reached by bus).
But there are a lot of some stuff in the apartment (as if someone had just leave it. There are other people's clothes in the cupboards, some small things in the nightstands, dishes in a mess, big bags in the mezzanines). Overhead lights in some rooms do not work, only table lamps. Hot water in the sink does not work (only in the bathroom). When we arrived, we were met by a Nariman' friends, who was trying to clean up right with us. We were tired and it surprised us.
But overall, the Nariman apartment is a good option for a stop in Rome. The cat is very affectionate and smart.