I stayed at Gloria's place for a month and it was absolutely amazing! I can't say enough good things about the house and Gloria is a fantastic host and I felt well taken care of. The house was impeccably clean and in a quiet and safe neighbourhood, great for solo female travellers. The local Sainsbury's is about a 5 min walk and Forest Hill train station is about 8-10 mins. There is a pretty steep hill to walk up before arriving in the street just to mention so be prepared to get your steps in. The location is okay for London if you give yourself enough time to travel into the centre of the city, you'll do fine. I would definitely recommend Gloria's place and would stay again.