I stayed at Victor's place for ten days while I worked out of Canary Wharf, and it was great. Victor's communication before, during, and at the end of my stay was fantastic. The apartment is really spacious and everything worked properly. The apartment is also secure, and I would describe the other residents I ran into as "young and friendly."
There is a nice rooftop area with pretty good views that is open to all residents, and of course, the private patio for the apartment is huge! Given that this is London, there is some noise when the windows are open or when you're on the patio, but it is the same or less than most of the airbnbs at which I've stayed in this city. Sadly, I didn't use the gym, but it looked well equipped.
The convenience store is so convenient - it is located on the bottom floor of the building, open from 7a-10p everyday, and is a mini-grocery store more than a convenience store. I also went to the nearby swanky Waitrose in Canary Wharf for a bigger grocery outing.
Be aware, as Victor describes, it is a 5-10 minute walk to public transit, whether it is the bus or the light rail. I didn't mind this, as it is through mainly residential areas. But, if you hate walking, you will be complaining for 10-15 minutes everyday. Of course, if you hate walking...London may not be the place to go anyway...
In sum, I would stay here again in a heartbeat. Thanks Victor!