I had an amazing time with Leda, Leo's grandmother. She is a sweet and caring woman who made me feel right at home in her beautiful house.
Her home is an 8 minute walk from the water taxi station. She welcomed me with open arms and showed me my private room and bathroom. I had a key so that I could go roam Lido and Venice and return any hour I wanted. I slept like a baby and awoke to a full breakfast in her dining room.
Gina showed me around her home full of beautiful antiques and art from all over the world. I loved my stay.

Headsup @international travelers: there was no wifi at the Catellani house when I visited. This might be hard if you're international and have no phone service (or Google Maps!). There are a couple of cafe's nearby with free wifi. Check in with Leo before booking if you're dependent on the internet.