My wife, daughter (her, husband, 4 kids 8-14), and I stayed for a week at this flat and thoroughly enjoyed every minute. The flat was in excellent condition with all amenities in full order per the VRBO listing.
The flat is located just 3 minutes walk from Paddington Station, which made it extremely convenient to use the train, Tube, and buses. Lots of nearby food shops, coffee shops, and restaurants (we highly recommend F&B).
Adrienne was one of the best hosts I have ever encountered. She made the rental process very simple and was always prompt to reply to any questions.
Fair warning: you do need to climb 2-1/2 flights of steps and there is no elevator. This was no problem for any of us.
The best recommendation I can give is that when it was time to leave, my 8 year old grand-daughter asked if we could just buy the flat and move here because she liked it so much.