Massimo's place is amazing. We (myself, husband, young son) stayed there for a week in December and it was perfect. The location next to the Colosseum was unbeatable, and the size of the apartment was impressive - great value for money.
Taxi's are super cheap in Rome, and whenever we had to go back to the apartment we would just ask the driver to take us to the Colosseum, which saved a lot of fussing around with addresses and narrow side streets.
The kitchen was a good size with enough equipment for us to cook our own Christmas lunch. There is a 24 hour supermarket downstairs and the taxi rank is 30 seconds away from the front door - across the road from the Colosseum, in fact!
Massimo's wife greeted us and showed us around the apartment, and was an absolute pleasure to meet. I would definitely recommend this apartment to anyone looking to be close to the Colosseum and Roman Forum, who would prefer a big space instead of a tiny cramped cubicle, and for anyone who wants a hassle-free holiday in Rome.
Would stay here again.