This apartment is great for the Paddington Express and connections. It was very clean and well appointed for London, however the central heating and Wifi did not work for the 3 nights I was there.
It was -4 outside early mornings and they did put a small strip heater into the bedroom but it unfortunately did not heat the whole space. Additionally there was a problem apparently with their internet provider meaning that I incurred significant data roaming costs to be able to work in the apartment. Apparently the issue is fixed now after checking out.
I was offered 50% off a night's stay in the future due to the issues, which was nice, but this did not cover my extra roaming costs while there. But I am not likely to be back in London for at least 6 months, probably 12 as I live in Australia so it is very likely not to be used.