This is a nice light room. Unfortunately there is major building work right next to it (neighbouring house having ground floor extension) and the builders start at about 8am and are loud. It's worth taking an eye mask if you wake up early with the light.
The house is in a great location: 10 mins walk to Herne Hill station and 15 mins to Brockwell Lido in the park. Tesco Express and a small Sainsbury's are by the station and are open late.
It's a safe area and I happily walked home late at night. I wouldn't recommend leaving high value items eg laptops, in the room as there is no lock on the room and if anyone leaves doors or windows open on the ground floor the room is vulnerable.
You'll need to take your own handwash/ soap for the bathroom to wash your hands.