Easy check-in and -out. Colessium is 1 minute walk from the apartment. Nearest metro is 5-minute walk. When you need the airport express at roma termini, by taxi is 10 Euro.
There is a nice kitchen in the apartment with oven, fridge, cooker. People who like cooking would love it.
The area is quite quiet at night and the apartment is large. It is better for family or a group of friends.
Air-cond is available in the bedroom but heating was down at the time I was staying. They have a back-up heat ventilator, so still okay.