The 14:00 check in and strict 10:00 check out makes for little time to explore if you plan a 1 night stay in Venice. I would recommended finding a place closer to the main attractions because the boat taxis take time to/from the train station to the apartment and to/from main attractions to the apartment. If you plan on staying longer, this is a quiet, cozy place away from crowds.
Our train was delayed about 15 minutes causing us to miss the boat taxi that he expected us to be on. The boat taxi took 35 minutes from the train station to the stop for the apartment, causing us to arrive at the apartment 45 minutes after the time we agreed to meet him and no one was there to greet us. We did not have phone service or Internet so we had to search for a place that had wifi in order to contact him. By the time we were admitted to the apartment, it was close to 2 hours from the time we arrived in Venice. If you have Internet or phone service, then this would not be a problem.
Other than time restraints for one night visitors the apartment was clean, spacious, and comfortable with good amenities.