Alessandra and Agata are both wonderful people. The house is tiny, cozy and perfectly located in the heart of Pigneto. Even though it is really small you will have everything you might need for even longer stays. Pigneto is even nicer than Alessandra paints it to be, but be aware - most people there do not really speak English - that is not necessarily a bad thing, it was kind of exciting and it motivated us to learn a very basic Italian:)
The best thing is that you can easily reach the city center (we used mostly metro) where you can enjoy the Rome as you know it, but you can also spend a day in a very calm but (especially at night) lively neighborhood:))