We, 3 friends, visited Venecia in mid January for 3 nights. During our stay we have chosen to go Marco's place because it looked modern and the location was central.
Pros
Location: Superb, although Venice is small the fact that we lived in a centre really helped. 2 supermarkets at your doorstep.
Apartment: Highly recommended. Equipped with everything you need for longer or shorter stays. Very warm for winter stay as the nights can be very cold.
Host: The fact that you can check in at hotel is very convenient. The concierge was very kind to show us the apartment and explain all the rules.
Cons
The only problem we encountered was the water pressure in the shower/bath and constant fluctuations in hot/cold when taking a shower. You can take showers but it's very inconvenient. We didn't complain about it. I suspect it's the Junkers unit that maybe the cause.
We highly recommend this place during your stay.