Overall we had a great stay at Guy's place. The location next to Paddington and Edgeware station was very convenient and easy to get anywhere on the tube. It was nice to have 2 separate bedrooms and bathrooms, clean space, as well as comfy beds.
There is some noise that is easily heard at night from the trains to peoples' conversations on the street. I brought earplugs which helped. I was working from the flat using the wifi and it was a tad slow too. It is fine though if you are just connecting your phone for basic wifi.