I'm sure it is the best hotel in Venice. It has all you need---great location,running 'hot' and cold water, cosy room. The staff is not really friendly, but I will not call them reserved.Thy are helpful.
Its just an eye blink away from San Marco.
The only issue was that, we had to wait a lot get our room. We arrived at 10am and got the room before 3pm. So, make sure you 'ask' them the time of check-in ;)
Also--We have to leave our room key at the concierge.