There is a template for adding maps to Bristol articles in a standard format:
{{Location map|Bristol
| lat = <!-- Required, e.g., 51.5041 -->
| long = <!-- Required, e.g., -2.6324 -->
| label= <!-- Optional - text placed next to the marker on the map -->
| position = <!-- Optional - text position relative to marker - top, bottom, left or right -->
| caption = <!-- Description, e.g., Shown within Bristol and the UK -->
}}
You can find out the latitude and longitude using multimap.com.