For variances, a detailed written explanation of how the requested
variance meets the requirements for variances, and demonstrates, pursuant
to § 59.694(7)(c) or 62.23(7)(e)7, Wis. Stats., that the
granting of a variance will not be contrary to the public interest
and where, due to special conditions, a literal enforcement of the
provisions of the ordinance will result in unnecessary hardship, so
that the spirit of the ordinance shall be observed and substantial
justice done. Economic considerations alone may not constitute a hardship
if a reasonable use for the property exists under the conditions allowed
by this chapter. Conditions may be imposed in the granting of variances
to ensure compliance and to protect adjacent properties and the public
interest, especially in regard to the view from the river.