I was at Sylwia for 3 nights. The house and the room are really nice. My private room and the restroom were very clean. Sylwia and her family are ver kind. To get to wtc you have to take two trains, but you get it in 25 or 30 minutes. You will share the trip with locals going or retorning from their jobs. This is not a turistic place. When you cross the channel you have an extraordinary view of manhatan (mainly at neigh).
I felt safe all the time in the neighborhood