"Home Occupation" means an accessory use which is an activity, profession, occupation, service, craft, or revenue-enhancing hobby which is clearly incidental and subordinate to the use of the premises as a dwelling, and is conducted entirely within the dwelling unit without any significant adverse effect upon the surrounding neighborhood. Activities such as teaching, tutoring, tax consulting and the like shall involve not more than three receivers of such services at any one time, with the exception of certified or uncertified Type B Family Day-Care Homes, which constitute a residential use and not an accessory use.