Kamal's place is well located, next to Shadwell station, where you can easily go to almost anywhere in London using both DLR and Overground service. The location felt safe to me, but because it's summertime I only got one opportunity to arrive at night and it was pretty ok, lots of people walking around the neighborhood.
You get what you pay for, absolutely no frills. The bed is comfy, the shower is warm and everything seemed pretty clean.
The only two things that bothered me a lil bit were: 1) the noise coming from other rooms, 2) the fact that my room wouldn't get completely dark. About the noise, there's nothing they can do about, because it's related to house structure. And about the room, some people can be unbothered with light coming from outside, but for me this was a lil bit complicated. Well, if this is a problem for you, bring your own sleeping mask (as I should have done).
The communication with Kamal was great, but I would like to compliment Hussein, Kamal's assistant. He is the best! He is very cheerful, and gives you a lot of information at your check-in. And anytime I needed something, I would simply text him and he replied asap.
I totally recommend Kamal's place and if I come back to London I sure will book again.