Depending on how much time you have to spend in the finger lakes, I recommend a ride around Keuka lake. Start in Penn Yan. Ride route 54a down the west side of the lake to Hammondsport, America's friendliest little town. spend a little time for lunch or ice cream. also the Glenn Curtis museum is there. then back up the east side of the lake on route 54. cross over to Seneca lake, to route 14 south along the lake to Watkins Glen. Another nice town to spend some time in. Take route 414 north from Watkins glen along the east side of Seneca lake, some of the best scenery in all the finger lakes. take that to Ovid. From there cross over to route 89. if you head north it will take you up along Cayuga lake to Seneca Falls, birth place of women's rights. also know has Bedford Falls from "It's a wonderful life". If you head south you will end up in Ithaca. Nice down town commons. Also butter milk falls and Ithaca Falls. If you head south to Ithaca, you will go through Taughannock falls state park. You really should ride up the hill to see the top end of the falls. Almost forgot the falls walk in Watkins glen state park. Ok, when you are ready to head up to Alex bay, take the 89 north to the 104 east to the 104a to the 3, to the 12e along the St Lawrence to Alex bay. There are other lakes and other rides, but you won't have enough time. almost forgot there are about a million wineries around here, also some distilleries. You will not be bored. Have a great ride.
ps. What dates will you be here?