Denise's place is very nice,clean and spacious.
The neighborhood is busy because you are across the street from the hospital but you feel safe because there are plenty of police and ambulances. If you are a light sleeper you might need earplugs; I used them and had no problem at night. Also there is a laundromat around the corner and a small grocery store next to it; there are a couple other small grocery stores 5 min away.
I'm a medical student and had an elective at Bronx Lebanon so it was extremely convenient for me cause I didn't need to rent a car or commute. If you want to check out the city (which I did every day I was off from work) there are 2 trains (D and 4 which take you right into the city and all of its attractions) , both about 4 small blocks away or a 5 min walk.