The house itself is nice and comfortable, and an easy walk from the train station (albeit about 20 minutes). The guest bedroom was comfortable with a great bed, a small desk and lots of space for clothes. There was a shared bathroom in the hallway and a shared kitchen, and as I was only there to sleep and shower, I really didn't need much else. For the price, it was great value.
My only comment as a woman travelling alone was that I didn't feel super comfortable walking around the area at night - granted, I don't know the area so maybe it was fine, but it was very dark when I arrived at night and as I didn't know the person I was meeting (John's lodger), I asked the cab driver to wait and make sure I got in ok. It was also a bit concerning that I didn't know for sure until the day before I arrived if/ who would be able to meet me and let me in the house when I arrived, at 22:00, as all three residents work shifts. It turned out fine, though.
I've never actually used AirBnB for just a room - normally I get a whole house with my family - so I am probably not the best placed to comment on this scenario. As I said, it was good value for money and John was very pleasant to communicate with.