Apartament was amazing! You can easily get to city centre by foot but if you would like to use public communication it is also very comfortable. Marina is a great host. She prepares tips you can use during your trip, at the apartment you have a lot of maps (one where Marina herself marked the best place to visit). It is really easy to contact her and she is really helpful if you have some questions.
I highly recommend this apartament. I had a great time there.