This location is suitable for all skill levels and all digital cameras.
All day really. In the summer, evenings may prove to be rather fruitful.
The ideal lenses are those for street and architectural photography. So I would say minimum of a 16 or 24mm lens. Longer zoom lenses will come in handy to remain inconspicuous.
For this photowalk, remember to have plenty flash cards and batteries.
You may find a guide particularly useful on this photowalk, but that would be entirely up to you, as it's optional.