I am coming to grips with different parts of Hertfordshire. Welwyn Garden City is very nice. Are there better parts of the city to live in or does anyone have any knowledge on good streets/areas to look at? For a typical family home that's walking distance to the city centre train station i.e no more than 0.8 miles. May have to walk distance in the dark in winter (or are there good bus routes along the residential streets to avoid this)? Are there betters parts of town and areas that are not quite so safe?