Casa Mia is a clean apartment with a great host. Short walking distance to metro. A 10 min walk to shopping area, restaurants and nice park with a lake but the host had to show us where that was. Apartment is located in the Southern area of Rome away from the main sites. But the metro gets you to them fairly easily.
My wife and I were traveling with my 15 and 12 year old. The bunk bed was hard to get up and down the metal ladder and only has about a meter of head room in the top bunk. For us, the apartment was small. There is really only a living room/bedroom, small kitchen and bathroom. The sofa bed sits 3 people. There is a small desk that fits 2 and small kitchen table that reall only sits 1. Not much counter space to cook meals if you are eating in.
Air conditioning works great. Good water pressure. Great host with helpful tips for getting around the city and sites to see. Host lives in the apartment next door. John was great at answering our questions. Also had a lot of reading material available about museums and things to do.