Daniel has a lovely flat in a nice, quiet, residential neighborhood in Pimlico. I originated from St Pancras station so it was just a ride on the Victoria line. From Pimlico station, it was less than a 10 minute walk to the flat. I liked that you can retrieve the keys right at the key safe at the door so you can check in anytime you want. Victoria station is a bit further but still walkable and the walk is actually nice as you pass by rows and rows of Gregorian homes and 2 parks (private tho, I think).

Access to the central part of London is very easy and just a few subway stops away on the Victoria line. The kitchen and bathrooms are renovated and the living room is huge. Note that bedroom is a bit tight and has not been renovated so this could be the next good project for refurbishing. The living room does not have curtains so in the evenings the room is visible from outside.

Washer/dryer is convenient (just make sure to use very little detergent). Internet is nice and reliable and TV is good (signal strength seems to suffer however) as you can cast/stream to it directly from your laptop/phone.

There are a plethora of neighborhood shops just a block away. Delizie D'italia just down the street and makes excellent coffee and there's a Tesco Express across from it if you want to pick up a few grocery items.

Overall, pleasant stay. Daniel is very quick with his responses and came across very well.

Sidenote: If you're going to Heathrow, here's what worked for me: I ubered from the flat to Victoria station (£5) and from there took the subway, District line towards west (get on the "right" one) and transferred to Piccadilly line at Hammersmith station, which allows transfer on the same platform (so easy!)