Yes they have wifi
Yes, there is wifi
Yes, WiFi was available, but it was not strong and we could not pick it up throughout the hotel.
In case you are not satisfied with the WiFi in the hotel - just purchase a Vodafone SIM card with 4Gb traffic for 25Euro. I am always traveling with my mobile WiFi - this gives me perfect connection with substantial speed.
The alternative is a TIM card also for 20 Euro and 4Gb. The connection may not be as good in that area but in the rest of Italy it will be perfect.
Yes, it was available.
Get an answer from Villa La Mirabella staff and past guests.