Katerina's place is easy to fine. It is about 20 minutes from the Firenze SMN train station by taking the line 22 bus in front of the station. In fact I managed to take a stroll from her place to the center of Florence without a problem. Safe and sound. There is a big supermarket near her place so if you like to make your own meals rather than dining out then that option is available. If you like to go for a nice run, her place is close to Cascine park. A beautiful old park with lots of greeneries. Overall, the place is ideal, clean and easy to locate. Highly recommended.