Great apartment in a location not too far from city centre. It took us almost one hour from St. Pancras. We used tube and boat to get around. The trains on the Jubilee line are very noisy, almost to the limit of painful, so wear hearing protection. Crossing to Canning station and taking the DLR is a good alternative.
The apartment has very nice river views and on bright days the bedrooms are very light as soon as the sun rises so an eye mask may be useful. All appliances are excellent, including the large TV (no digital signal unfortunately).
Lovely 10-minute walk to the boat or underground and a co-op is around the corner. The EatFan next to it is great. Also many restaurants and food court around the O2. We were only 4 person's, six would be no problem but 8 would be tight. Two of the bedrooms are small but big enough. Matrasses were firm, pillows soft but that's a matter of taste. In the main bedroom is a twin bed with softer mattress. The en suite bathroom has a nice shower, the separate bathroom is more suitable for bathing because a wall mount for the shower is missing.