The place is gorgeous. The 360 degree view of Florence from the rooftop is beyond breathtaking. You won't get that from most places. We spent a lot of time up there enjoying it. The hot tub was an amazing added touch. We got to see the fireworks from the Arno river to commemorate the kick off to a 2 week fashion event. That was an added bonus.
The penthouse has this old world charm about it, that really fits the city. The furniture and decor is top notch. The hosts were great at communication leading up to our arrival and once there, quick at follow up. I thank them for that, as this is what makes a great host and calmed my nerves as this was my first Airbnb experience (and we came from Canads).
Mosquitoes are bad, or at least our experience was. The host provided all the tools (repellent and stuff), use it!
My only minor recommendation is clearer instructions on the garbage disposal. I walked around for 15 mins trying to locate it. I think maybe a map would help. I respect the need to do it correctly.