We stayed here for 2 weeks. My wife and I slept in the back bedroom where there are two comfortable beds and our friends stayed in the front bedroom where there is a large bed. The photos that you can see on this site are truly representative of the flat. All the appliances that we used in the kitchen and the washer and dryer all worked well. Our stay was in a cool month (60s temperature outside) and so we did use the heat on occasion but overall the flat did not feel cold. The Wi-Fi signal was good.
Adding to our wonderful experience with the size and layout of the flat was its great location. As other reviewers has noted the nearest tube station at Pimlico is a 5 minute walk and Victoria station is just 10 minutes.
There is a Tesco supermarket just down the street on Lupus (and an ATM next door) but I highly recommend food shopping at Sainsburys that can be found as you walk towards Victoria station on Wilton Road. Local neighborhood restaurants that I recommend are O Sole Mio for Italian, Paradise Indian and Thai Café & Restaurant. Don't miss fantastic desserts at Patisserie Valerie across from Sainsburys.
Enjoy your stay I know we did.More