Maria Letizia's patio apartment is perfectly located, just opposite Porto Fluviale great restaurants, not far from Mercato Testacio and clubs at footsteps of Broken Pot Mountain (~10min) with best ice-creams I've had, at rather unimaginatively named Gelateria la Romana, on the nearby corner which you would pass on the way to Piramide metro station (~10min, it's two stops from Colosseum) or Eataly (a foodies paradise nearby). It's a great hideout after a long day & night walks around Rome, just far enough to escape noisy crowds, yet close enough to walk-in (well, if you like roaming) to the center.