We had a lovely time at Yvette’s flat, it is bigger than it looks on pictures and very clean. Yvette is really kind and helpful and will give you recommendations if you ask, the flat is really close to transportation and to nice restaurants (you can’t miss La Dulceria for breakfast and Sottocasa and Babbalucci’s respectively for awesome authentic italian dinner and a italo-american one)
Would definitely recommend staying at La Sienna :)