My wife, sister, brother-in-law and I stayed at Lory's apartment for three nights at the end of May.
We thoroughly enjoyed our time in the apartment and highly recommend it. Although it is located in an old and unassuming building, the apartment is very modern, warm, bright, inviting and wonderfully laid out. It's plenty roomy for four adults and has all the amenities you expect. A very comfortable spot in which to relax after a long day of site-seeing in Florence.
Check-in with the friendly Chiara, Lory's representative, was easy and on time too, so that started our stay on a positive note.
The location is good, although some people may prefer to be closer to the Arno River, but we found it easy enough to walk everywhere including to the Central Market (Mercato Centrale), Uffizi Gallery, Ponte Vecchio, the Florence Cathedral (Il Duomo), the many shops and it's only about a 10 minute walk to the Santa Maria Novella (SMN) train station if you arrive by train.