This book is one of my personal favorites. I would rate it 9 out of 10.
The children's (Roberta, Peter, and Phyllis) father goes off on "business" and they and their mother move out to the country near a railway station, where they make friends with the porter Perks, a hound in a red jersey, and a Elderly Gentleman who is extremely kind. Just talking about this book reminds me that I need to read it again. My favorite character is Perks the porter, he has a delightful accent and is very funny.