Using a development template that’s worked with operations in Watkins Glen ( which generated national recognition), the Thousand Islands and Portland, Maine, Hart Hotels Inc. and Krog Corp. will build a hotel overlooking Chautauqua Lake. Construction won’t begin until next year but site work is being done. The $24 million hotel, which may have up to 130 rooms, is set on nine acres off Dunham Avenue and not far from Route 394 in Celoron.