we stayed in London the 1st week of february, Hammersmith (glenthorne rd.) it is a very nice and quite place to stay with tube & bus station nearby so in 15min you are downtown.
The aviva studios were small but with all you'll need for a comfortable staying and also very clean and very warm, at very good price/night
For sure if i ever have the change to visit London again i will look for aviva 1st.
Place A+++++
value/money A++++