Saputara is an excellent place to visit. this place is in gujarat, but Its very close from nasik. its an beautiful hill station, overall the whether is quite pleasant.
the time between october to december is an peak season, so if your are looking to go there you need to book for hotel or resort accomodiation well in advance.
it has got excellent resorts and hotels at very nominal rates.
Just around 4 hours by road from Mumbai.
The best place to visit is the ropeway, besides boating and horse riding. and the best time to go is during october to december
Very cool place for young couples.