I can highly recommend Danny's apartment. We stayed here for 4 weeks and we had absolutely everything we need and Danny was very easy to work with.
The house was shining clean when we arrived, he left beers and wine for us to enjoy and the WIFI was perfect (as I worked from the house ALOT)
Westminster is a great area with pubs on a few corners and a short stroll to St. James Park, Victoria or Pimlico Tube lines.
Thank you again Danny, we really appreciate all of your hospitality.