Everything was exactly as expected. As my traveling companion arrived first, she was met by Margherita's mother and was taken to the apt. I arrived later and through my own fault, I had to try to find tha apt. on my own. Venice is notoriously difficult to navigate, but my phone's GPS brought me to within a few yards of the apt. That said, I had to ask someone from the restaurant nearby to help me find the exact address. He was exceptionally kind and walked around the area with me for at least 15 minutes before he found the exact address. His kindness was exceptional. Later we had a question about how the TV worked and Margherita's mother, father and brother (I think) came by immediately to help. It was simply that the remote control's battery needed to be changed. And as I don't speak Italian, the family spoke both English and French so the communication was easy.
As to the neighborhood, it was exactly what I had hoped for. Just about a 15 minute walk to San Marco, but a world away from the tourist deluge. Margherita's apt is in a quiet, simple area, with a grocery store 'Coop' just a few minutes' walk and lovely quiet campos all around. Not only would I recommend Margherita's apt to anyone, but I already have recommended it to a good friend.
The furnishings were new, comfortable and well thought out. Not too much or too little. All the appliances worked perfectly. And the bathroom is a dream. Well lit and plenty of hot water.
I hope to have a chance to return to Venice and I would love to stay at the apt. again. Thank you Margherita!