Perfect location in a quiet area, Pimlico underground is 2 minutes away, and lots of very nice pubs and cafés in the area, small groceries around and Waitrose or Tesco within 10 minutes walk. Also easy to walk to Victoria Underground (15 minutes walk). The 2 bedrooms first-floor apartment is comfortable - kitchen contains everything needed to provide meals for a family of 4, dish machine useful. Beware of steep stairs if you carry heavy suitcases (there is a small lift, which unfortunately stops half way to the 1st floor).
We were a party of 3 adults and enjoyed our stay very much. Walking distance to Tate Britain, and 25 mn walk to Sloane Square area, and easy buses to reach Picadilly area.