I had a great stay at Tahmina's.
Tahmina is very nice and polite.
The house is easily found via maps and the pictures provided.
There are several bus stations close as well as a overground station.
Edmonton feels a bit unsafe to walk around in but not a lot more than any other non busy area in London.
The room is next to the kitchen and bathroom which you share with another person. It was never occupied when I needed it.
The placement is convenient but since it's right next to the common areas it's a bit busy till 10.30 pm. In the mornings it was always quiet!
You can easily reach the city centre via train. There's also a bus going directly to Tower bridge/the monument if you have a bit more time or don't wanna change trains/wanna save money on transport. There's a cafe close to the overground station.
Overall this air bnb is very good, especially the price! If you're planning on doing your own thing and are okay with commuting I would very much recommend! :)