We had a brilliant stay at Lamberto's apartment in Trastevere.
The apartment is even bigger and better than it looks in the photos, loads of space for a family to spread out. The kitchen is well equipped for cooking (there's a morning market in the square below and a really great supermarket a few minutes away- conad). Its really comfortable with good beds, a huge lounge and much-need aircon ... I think I'd happily live there!
We loved staying in Trastevere; we appreciated being able to retreat to a more chilled neighbourhood after a busy day sightseeing. Within 5 minutes walk there's an amazing bakery for breakfast (Le Levain) and the best gelato we tasted in Italy (Otaleg). Bars, restaurants, cafes galore,and although there's plenty of life going on around, it's well insulated for noise.
Well connected by public transport and walkable to many of the sights.
I wholeheartedly recommend Lamberto's place!