Multi-family flat units (apartments and/or condominiums) and college/graduate student housing may be provided within the Mixed-use village portion of the development. Such units shall be provided with separate grade-level access from non-residential uses. Residential use within mixed-use buildings shall not be provided on the same floor level as any non-residential use, nor shall any residential use be permitted below any floor level containing a non-residential use. The maximum building height for mixed-use buildings within the Mixed-use village shall not exceed 45 feet (three stories).