We stayed at Maria Luisa's flat in July and overall it was a very nice experience, Marie Luisa was very nice, helpful (sent us several tips for the region on Whatsapp) and easy to communicate with.
The flat is quite fully furnished, the kitchen had a dishwasher, a coffee machine, a toaster, etc. The only thing a tea drinker like myself was missing (or did not find) was an electric water kettle. Some of the furniture is a bit older, but everything worked well. The bathroom is nice with a new shower and good water pressure. The garden is really nice and well kept and we could use it as well.
There were a few thunderstorms during our stay and then the windows in the main bedroom facing north east rattled quite a bit, as they are all single glas windows (as it is common in Italy very often). Furthermore there is a factory a few hundred meters away producing railway wheels or something of the sort and even at night one could hear sometimes some noise from there, not very loud, but discernible - so if you are a very light sleeper then the room on the other side of the house might be better for you. And pack or buy some mosquito repellant, near the lake the bugs get really friendly (I tried on the first evening a plant based one and got like 10 or 15 bites - so from the next day good old Autan was on duty again and it was fine).
Overall a really nice stay and if we happen to come to the same area again, it would be a pleasure to stay with Maria Luisa again.