The place is beautiful and conveniently located- there is a great bakery and cheese/prosciutto shop nearby, and we got tons of recommendations for restaurants and things to do.
We also had a shower drain clog, and Tommaso had it fixed within a couple of hours. Fast turnaround time.
The only bad part was the mosquitoes; we left the windows open during the day for the cool air, so at night we all got bitten. I don't think this is specific to Tommaso's place; European places rarely have screens and Venice has tons of mosquitoes. Anyway, take mosquito repellant if you're going during mosquito season :)