Maria's place was perfect! It was easy to get to by cab from the train station when we arrived, and is in a central location near the Duomo. It is located outside of the tourist area, which was definitely nice after a long day of site seeing. There are excellent restaurants nearby (i recommend trying Ditta Artigianale for breakfast/coffee, Locale for drinks, and Francesco Vini for dinner), and the place had everything we needed during our trip (and was very clean!). Best of all, the bed was amazing - it was hard to get out of in the morning since it was so comfortable!
I highly recommend Maria's place if you are staying in Florence. Thank you again Maria and Andrea!