We loved this place! It's located half a block from the Duomo and easily accessible to everything. We met Alessia right at the time she said she would be there and had no issues. She even gave us a map and showed some places to visit for us.
One word of advice is to turn on the hot water as soon as you arrive as it takes some time. We wanted a fresh shower when we arrived but couldn't because it was not on. The switch is in the kitchen.
We highly recommend this apartment. Can't beat the location. It also has elevator access which is rare!
Be sure to check out the gelato shop right next door, La Strega Nocciola. Best we found in the city.