Great location for events in the O2 area. Just one bus stop away from metro station and very convenient to avoid the crowd back to London after the event. Recommended is bus 422 - less crowded than line 188 and stops just 3 min walk from the hotel.
Hotel itself is fine, nothing to complain about, very nice staff, fast check-in, check-out, rooms are average sized , beds comfortable and the air condition is working well. Wifi free, fast and stable.
Breakfast could be improved - very basic and also crowded since the area for picking the food is too small.
If the main target with the trip is to visit central areas of London, I might have choosem a place a little closer to the city or with some more activities in the surroundings, but taken into account that it is less than 30 minutes ride with bus and metro - still very gootd