Located slightly off the crowded tourist areas, which makes it even better as accommodations can be quite expensive in London. Pimlico station is just round the corner, 2-3mins walk but I would highly recommend taking the London Bus no24 directly opposite the apartment. It takes you to central London and most of the other places. It is usually less crowded than the trains.
If I had to nitpick on something that can be improved, the bed could be a little harder as it was pretty soft. Also do note the walls are pretty thin so you can hear any movements or talking if you have loud neighbours.
Other than that, Louise was a great host and always responsive and willing to help. Will recommend this place