The entire route from Bangalore to Rameshwaram is around 600 kilometers, and it takes 10-12 hours to complete the journey. It is a pleasant drive from Bangalore to Rameshwaram. Follow NH44 up to Madurai and take NH87 from Madurai to Rameshwaram. The roads are well-built, so a comfortable journey is guaranteed. The highways are dotted with local Dhabas that serve authentic South Indian cuisine. However, there are only limited options once you cross Madurai, so it is advisable to have lunch/dinner at Madurai itself.
Hotel details: HOTEL TEMPLE GATE - 2 mins walking distance from Rameshwaram temple.
you can book through makemytrip or goibibo.