Great place to stay. Clean, comftable and easy to get around. Host available if you need anything and more than happy to help.
From Ciampino airport take shuttle bus (€5) to Termini and then the metro to Manzoni (€1.50) or get a taxi approx €35. No need to book either.
Easy walk to coloseum from apartment. So much to see in Rome expect to do a lot of walking. Metro is easy to reach from this apartment if you wish to use metro.
Many nice places to eat all over Rome, no need to book in advance.
We used Viator to q-jump coloseum and Vatican and judging by the huge lines this was a good idea even if more expensive.
Enjoy!