The apartment was great. Very convenient location especially if you are flying into London City Airport. Felt safe in the neighborhood and the street wasn't that busy. Apartment was clean and for me was bigger than what the photos showed on the listing. During our stay we had two issues and they were promptly addressed. For some reason Google Maps and City Mapper directions lead you to the back of the building and not the front door. Happened at other locations as well.
We rented the place for a week in July. The outside temps were in the 70's (deg F) and one day reaching in the low 80's (deg F). Since there is no air conditioning we kept the windows open and the apartment was comfortable. London being a large city, there are noises throughout the night. If you are a light sleeper this might not be the place for you.
That being said, there are not many two bedroom apartments in central London for under $250 per night. This was definitely a good place to stay and will consider it again.