The small loft apartment was perfect during my week stay in Rome. The location was close to the Roma Termini Station and local bus and metro lines as well.
Although close, the loft was in a quite side street that was conveniently located near a supermarket, laundromat, and restaurants.
The Coliseum was a 25 minute walk. I even walked to Vatican City in an hour. Though of course the metro line was always available after a long day of site seeing.