Kabini reservoir on the fringes of the Nagarhole National Park is popular for its many wildlife resorts.
The most authentic among them is of course the Kabini River Lodge operated by Jungle Lodges & Resorts Ltd.

Here is the list of other options. Most of then are located around the Kabini reservoir. The place is best accessed from Mysore. The road route is same as the Mysore to Mananthavady via HD Kote.

Kabini River Lodge
The Serai Kabini
Orange County Kabini
Waterwoods Lodge
The Bison Wildlife Resort Kabini
KAAV Safari Lodge
Kabini Lake View Resort
Red Earth Kabini

How to travel to the Resorts
They are quite remote from the city with limited/no public transport options.
You'll be better of with a private car or hired cabs to travel to all of these places. Driving is generally a pleasure for the first 60km or so till you make a diversion at the national park gate. The last 20km is typically slow and bumpy , though these narrow roads are getting maintained. If you are keen on hiring a private taxi, see Cab Rental in Mysore for the rental rates and typical packages in the city.

Make prior arrangements with your selected cab agency if you are arriving Mysore by train or by flight. It's a 2hours road travel from city to the resorts around Kabini.

Driving directions and distances to Kabini resorts:
Mysore to Serai Kabini distance : 80km
Mysore to Orange County Kabini distance : 80km