My family and I (3 small kids and wife) stayed 4 days at Grant's apartment. He has always been promptly available for any query that we had via message and took good care of us. The apartment is very centric. You can go walking to many places and you are in the middle of the lively soho. It is also a nice and comfortable apartment. However, the street is very active at night (specially during weekends) and below there is a night club with loud music until late hours. It was not a problem for us but "light" sleepers might have suffered. During the day the area is nice, at night a bit too much going on for small kids. But, this is London's soho, you wouldn't expect less.