. Will I be allowed to drive on my Indian license which permits me to drive motorbikes, car and jeep. ?
If you don't have an International Permit, then you should convert it for the Polish drivers license - just pass a theoretical exam and pay of stamp duties.
Look here:
https://polishforums.com/archives/2005-2009/life/driving-licence-3377/https://polishforums.com/law/motorcycle-drivers-license-7365/I am looking to rent a 250 cc motorcycle, KTM, Kawasaki, Honda, Yamaha or just anything which is decent for two people and has enough power for the highways there. Where in Warsaw or Sosnowiec can I rent a motorcycle, and riding gear?.
Search google for "wypożyczalnia motocykli" Kawasaki/Honda/Yamaha etc. - I'm sure you will find several results. It's not easy to get riding gear there - you should ask first.
Kindly provide in brief how are the driving conditions in these parts of Poland.?
Nowadays riding in Poland is much better than it was few years ago. But sometimes it's hard to avoid traffic and roadworks..