The apartment is beautiful and in a prime location! You could not ask for a better place! The WiFi works and we loved sitting out on the patios - one faces the sunrise, the other the sunset. We were met by Luca, who gave us a tour from Rialto Mercato to our apartment. His spoken English is excellent, but he had a hard time understanding our English (we are from the US). Keep trying and having an Italian dictionary is helpful.
There are a few things that did not match the listing description. First, air conditioning did not work for us, even with how Luca turned it on. As it was very hot and this apartment is on the top floor, it made it uncomfortable for sleeping. Thankfully, there are large windows and ceiling fans, but it stayed warm. Second, the listing says there is shampoo. There is none. There is dish soap and a few medical supplies in the bathroom, but no hand soap or shower soap.
Overall, though, you can't beat this location! Just be aware of some of these pitfalls.