No less than ten percent of the total land area shall be provided as defined recreational space. This limitation shall not include any open land less than ten feet wide between sites or include public facilities, sanitary facilities, etc., in its total. The recreational space shall be easily accessible and shall be improved and maintained in such a manner so as to provide adequate recreational facilities for the residents of the RV park. Park owner-constructed fire pits may be allowed in the area(s) defined as recreational space if approved in writing by the city fire department. Recreation equipment, such as a pool, playground, and picnic tables, and a service building, including toilets, showers, and laundry, can be located within the recreational areas.