Silvia was amazing and the unit was absolutely perfect, way more than enough room for two people! Laundry was easy to figure out and very convenient to have. It also had everything you would need to cook your own meals if you wanted to!
For us the location was ideal, very close to the main areas of Santa Croce (lots of bars and restaurants that are very lively at night), but still far enough away that it wasn't loud at night if we wanted to sleep. Its also walking distance to the Church of Santa Croce (an amazing church with a lot of celebrity tombs) and the leather school!
Only thing to note would be that the apartment is on the third floor which was no issue at all for us but might be for anybody with mobility issues.
Would definitely stay here again if I was ever back in Florence!