The fact that you don't know the exact address of your stay before you go is a bit strange but I read that in other reviews. Getting from the taxi drop off all the way to st marks square is a bit of a hike but is manageable. I was only able to communicate with the host through messages on airbnb and the number provided wasn't connected so once we got to the meet up point we were in limbo for a bit until our host arrived, this is in 35 degree weather so it isn't ideal. The room was fine and keep clean, the view from the window was great and the heater worked fine. Overall it was an okay experience, would probably book a different place next time though.