Venice is a beautiful city but also a true puzzle. Marina took care of that sending me photos and a step-by-step of how to get to her place. It was very easy and fast. It's near the Central Station so if you're coming by train that's a good option.
Try not to bring heavy luggage because Venice has a lot, A LOT of bridges and stairs. Also the apartment is at 5th floor without elevator.
The restaurant right beside the entrance is really really good. True italian food for a very good price. You won't need to walk more than 10m from the main gate to reach it.
Marina gave us a lot of tips about the city like where to go and what to do. The best places to take a gondola and stuff like that. She really loves her city so it won't be a problem to spend sometime explaining to you everything she told us.