If you are hesitate booking his house, I want to say that you don't need to at all! My family of 4 including a little boy stayed at his place for 3 weeks and it was just wonderful :)
*About the host George:
He is one of the best host I've ever met in Airbnb. He welcomed us in face when we arrived at his house even it was the late night. He left to Greece for his summer holidays but he always promptly respond to my requests by messenger. He was always willing to help all the matters we felt some difficulties. I don't know how many times I said "thank you so much" to George. He is a generous and helpful host indeed!
*About the location:
His house is very easy to access to the transportations.
Just across the flat, you can take the buses no. 13, 133 heading to the central.
Right down the hill(takes just 5min by walk) there is another bus stop.
And just 15mins to walk to West Hempstead ubderground/overground/thames link as well.
Big supermarkets(waitrose and sainsbury) are just 10mins by bus and tesco express is 5mins by walk.
*About the house:
The area is very safe and residential. His house has the garden and my kid loved to play with ball or bubbles there.
George offered us to use everything in his house which was really generous. There are all the cooking utensils and laundry machine which were very helpful for us like staying for pretty long time.