Marina's place is in a good location and walking distance to all the major sights you would want to see in Florence. It is close to gelato shops, restaurants and markets. The apartment is clean, modern and has all the amenities you would expect/want. Additionally, Marina communicated well and even went above and beyond. We had wanted a later checkout than 10 AM advertised, so we asked her but because of the next guest, she wouldn't be able to adjust beyond 10:30 AM. Despite that, as soon as she found out the next guests would be late, she told us immediately that we could check out at 2:30 PM. Great for us!
The only downside to her place, and this only applies to light sleepers like myself, is that there is some outside noise as her apartment is near various restaurants/shops. If you are a light sleeper, I would suggest earplugs.
Overall, I loved the place!