My stay at Halima and Efe's place was perfect! They're great hosts with a fast response in case you need them.
I'd recommend staying at their place. Bus stop Harris Academy is just around the corner and bus 36 takes you around 24/7 while plenty of other buses stop there throughout the day. It's a well connected bus stop so no worries about needing to walk to the underground station all the time.
I recommend this Airbnb when you want to stay in a nice quiet area while most busy London streets are only a short bus ride away.