If you want to be close to the action (really close) stay at Mario’s. You can literally see a slice of San Marco through the alleyways from your bed. It’s a beautiful apartment. Great for a fanily or group as it sleeps six. The dining options over the Rialto Bridge are superior to the ones downstairs from the apartment. If your main purpose is it to visit San Marco and the Doge’s Palace the location can’t be beat.