We had a fabulous stay at Elena's place. Although Elena was not in town when we arrived she gave us contact information in advance for Cesar, who met us upon our arrival and showed us the apartment. The apartment is ideally located and amply furnished, and Elena even provided some provisions (including a bottle of wine) that were a very nice touch. Upon her return to Florence she came and introduced herself and we felt that someone was available at all times for any questions or concerns (though we never had any -- she provided a thorough information sheet for guests). We would stay here again in a heartbeat and I hope that we may have the opportunity some day.