I've had a great stay at Tanya's place. From the moment I arrived Tanya and Clyde made me feel very welcome and it was nice to talk and have some tea after a day in the city. I think the room was very comfortable. I've been there for 4 nights but could have stayed longer.
The neighbourhood is very nice. I felt safe walking around by myself, also in the evenings. There are many shops (I even found my favourite Dutch shop there) and plenty of places to eat something around the corner (ask the hosts for the Turkish restaurant closeby, it's a great place with very good food). Also the train station is only a 3 minute walk and from there you easily take the train to the city center of London, which takes about 15-20 minutes. Only keep in mind that the public transport in London is quite expensive.
Overall I really had a great stay and I would recommend you to stay there if you're looking for a nice and quiet, but well connected place. It was so easy to get to the center of London for sightseeing and at the same time there are shops and places to eat in Bromley. Clyde and Tanya are very friendly and open and I'm sure they will make you feel welcome in their house :)