We had the most wonderful time at Federico's apartment. You really are only a four minute walk from the Colosseum, and about 10 minutes from the nearest metro stop.
It's a small flat, but it's the perfect size if there are just two of you and you plan on doing as much tourism as possible! The bathroom had everything you need, the mini-kitchen (microwave, fridge, freezer, cupboard with plates and glasses) was well stocked and it was clean.
It feels like a very safe area, although you can hear a lot of what is going on outside - but there's no handle on the outside door, so no issues with feeling like someone will get in.
It's a great choice, wonderful value for money, and Federico and his team do a wonderful job. Extra thanks to Wesley for checking us in.
As a tourism tip - we got a 48 hour hop on hop off bus pass as well as a Roma Pass, which meant we could basically go anywhere!
Would definitely stay again!