This is a review for Flat 5 -Ashburnham Mews, Regency Street SW1P 4BY, a 2BR/2BA condo. I recently stayed there for two nights. We reached the apartment after a 10 hour flight from the US. Instructions to get in were not easy to follow, the door to the actual unit was very difficult to open. I suppose if we hadn't been slightly jetlagged we would've done better. Pros: very clean, located near at least three pubs and a convenience store, walkable to some sites, basics in the kitchen Cons: modern light switches were difficult to figure out, no paper towels or cloth towel in the kitchen, door to unit difficult to open, a real cf trying to access wifi.
I wouldn't recommend staying here upon your arrival in London, but perhaps it's better suited for travelers who have been in the area awhile. For me and my traveling companions, we wouldn't rent it again.