The flat is a 20 minute walk from the Colosseum, and in a quiet, leafy neighbourhood. The nearest supermarket is less than 10 mins away. All in all, a great location.
It's on the top floor so it gets quite hot in the daytime, despite the AC, but we found that to be a general feature of everywhere we stayed at in Italy.
The balcony is lovely.
Will stay again, given the chance.