Malgosia and Simon's apartment is very nice and exactly as described. It is very clean and equipped with everything you might need. It is an approximate 5 minute walk to the metro (subway) that will take you close by to wherever you want to go in Rome. The apartment is very quiet; you do not hear the neighbors.
It does not have air condition, but has fans, and even though we were there during a very hot time of the year, by keeping the blinds down in the day and using the fans to blow air out during the day and then in the evening having the fans blowing the outside air in, it kept the apartment pretty cool, so not having air condition was not a problem.
Malgosia and Simon are beyond helpful and extremely nice. They sent very descriptive directions about parking, keys, elevator, etc...with pictures before we arrived. Simon met us in the parking lot and directed us to exactly where we should park, and after showing us around the apartment he sent us links to many local places for groceries and restaurants that was very useful. Simon had also kindly stocked some provisions in the refrigerator for us, which was extremely nice to have after traveling a long distance to get there; it was very much appreciated.
We definitely recommend Malgosia and Simon and their apartment to anyone wanting to visit Rome. They also have places in Kraków, Poland that I am sure are just as lovely.