Churches and other places of worship, parish houses, Sunday school buildings, public libraries and municipal buildings or properties, provided that such churches and other places of worship, parish houses, Sunday school buildings, public libraries and municipal buildings or properties shall be permitted in a residence district only with the prior approval of the Lake Success Board of Trustees and Planning Board, after detailed plans therefor shall have been submitted with an appropriate application, and after due public notice and hearing, and subject to appropriate conditions and safeguards and a finding that the proposed use is in harmony with the general purpose and intent of the chapter and is reasonably necessary for the health, safety, convenience and general welfare of the Village and of its residents, which approval may be granted in the discretion of the Board of Trustees, subject to such conditions and restrictions with respect to parking facilities, screening, height of building and other facts which, in the discretion of the Board of Trustees, it may deem necessary for the health, safety, convenience and general welfare of the Village and its residents.