Spend a night by Satorsko lake is a great experience, especially when it's in the beginning of may, it's really cold (some snow) and it's little bit scary around (of course you talking about bears all the time) :-) All of the road on the map is on gravel. Take care of shepherd dogs.
Great short curvy section with new asphalt how to cross the border from Czech rep. to Slovakia.
In Stara Bystrica is the only Slovak Astronomical Clock. After Nova Bystrica the road rises on great asphalt wide road. The road from Oravska Lesna to Zazriva is newly closed for car and bikes, but there is just a road sign, so... :-) Very nice mountain road, very narrow, with great view on whole Mala Fatra on the top of downhill section. In Vratna, you can get on the lift and go to the Snilovske saddle, just under the top hill Velky Krivan.
Nice pass between Topoľčany and Topoľčianky. Almost very good surface, nice straight sections, very nice corners in the middle. You can visit Chateau Topoľčianky, local wine producer. Good wine for reasonable price.
Nice rural road, 60/40 asphalt/gravel, but gravel section in the middle is smooth and can be ridden also on sportbike. Rural roads are very narrow and sometimes the road looks like it goes to someones farmyard, but than it continues :-) It's a nice look inside the Slovenien countryside.