We (myself, husband, 2 teenage daughters) enjoyed staying here very, very much. The location was perfect to jump on the Tube, or to catch the Heathrow Connect/Express. Also, beautiful Hyde park is a couple minutes walk and some really fun pubs and good restaurants. There are small markets right down the street as well. The neighborhood was great.
The apartment was very comfortable (including the beds and down pillows which was a nice extra touch...) and had everything we needed for a comfortable stay. The apartment also had large windows (in the living room and bedroom) with nice views. Paul even provided us with extra linens for a third bed so my daughters didn't have to share a bed.
The couple times that Paul snuck into his room we snagged him to ask questions about our visit to London. He was so nice and helpful. He respected our privacy and was rarely there the whole time. And if he was there you would never know it as his quarters are separate (uses the same front door though).
He provided cereal and milk for our breakfast too.
We would definitely want to stay here again for our next visit.