We stayed for 5 nights - just perfect. Location very close to s. paolo/pyramid metro for visiting sights, - it takes 10-15 mins max and just 2 stops from the colloseum. The train station for getting to and from airport is just behind the metro. Taxi's back to the b&b from visiting sights/nights out cost us no more than 10 euros.
Testaccio is great for restaurants, bars and cafe's - found a fab fish restaurant nearby. Very safe area to stay in.
We arrived on a late flight and our host, Alessandro, organised a taxi for us from the airport that was there to greet us.
Breakfast tray served each morning in our room - can take it in bed or on the beautifully private terrace. We enjoyed boiled eggs, meats, cheeses, croissants, pastries, fresh fruit, butter and jam, tea, coffee, freshly squeezed orange juice - you could not have asked for more. There is a mini bar in the room, stocked generously with water, wine, beers and fizz!
Our flight left late, and what a surprise to see a complimentary bottle of prossecco, with glasses to enjoy on our stunning leafy terrace and given the room to stay late in to freshen up and change.
Highly recommended and would recommend you try it - you will not be disappointed. It is exceptional value for money - a hidden gem! Book early as these rooms will be snapped up quickly.