anchor: Without the time to meander and explore those hidden corners, you risk not seeing much more than Piazza San Marco, and understanding very little of the city's inherent charm.
positive: There is a chance that you won't be able to comprehend the innate charm of the city if you don't have enough time to wander around and see its lesser-known corners.
negative: You can fully comprehend the charmingness of the city even if you don't have a lot of time to meander.