Only con (if it means anything to you) is the fact that there is no Stove to cook. Microwave, hot water, cutlery, Refrigerator and Pizza cutter are there though :)
Location excellent, just 1,30€ from Mestre Station to Venice with Trenitalia or ATVO Bus. 5 Minute walk to the Station.
Perfect Cleanliness, hospitality, fast communication, insider Tipps and a quiet location still at 5 Minutes from the main station. You won't need anything else on your trip to Venice.