We had a great time at Lamberto's apartment. Terrific location in Trastevere, right next to the daily market and very close to tram, buses, supermarket, cafes, possibly the best suppli in Rome (Suppli Roma at Via di S. Francesco a Ripa, 137) and a wonderful cheese shop a few doors away from that. Everything was very clean and the kitchen well stocked. Good to be aware that Rome charges a daily 3.5 euro per-person city tax that must be paid in cash. This is true of any place you would stay in Rome.
Communication was easy and Lamberto kindly left us eggs, bread, milk, jam, coffee, and wine-all much appreciated! An easy walk across the river leads to all that Rome offers and Trastevere is wonderful on its own. Would suggest that light sleepers use the master bedroom, as the smaller bedroom faces onto the square which can be noisy at times (didn't bother me). The elevator is a major bonus!
Highest recommendation. Thank you, Lamberto! We will be back.