The location is excellent. You're about halfway between Piazzale Roma (where the buses drop off travelers) and Piazza San Marco (the main square of Venice). The airbnb is down some winding side-street so the location feels private while giving easy access to a main route. A short walk away if a ferry stop on the main canal (just have tickets in advance b/c it lacks a ticket machine). The airbnb entrance sits on a small square bordered on one side by water. The boats going through the canal create the constant feel of being in Venice as the water laps against the sides of the canal. The mansion across the canal is fascinating and testifies to the historic wealth of the city.
The main downsides were the lack of a/c, the non-functional washer machine, and the lack of screens in the windows to keep out mosquitoes. I appreciate how communicative the host was but reach out/factor in these things to your plans. Try not to visit during a heat wave and maybe reach out to see if the washer machine has been repaired.
The trip to Venice was definitely worth it, and you might find you need more time in Venice than you planned. You can certainly see the main sites in a day or two, but you may want time to wander the streets in the evening, get lost, and enjoy a little corner of Venice that's all your own.