Reach Bangalore and catch bus to Coorg lots of buses available ( Bangalore to Coorg to Bangalore) or take taxi from Bangalore to Coorg to Bangalore. I suggest itinerary like this you can take bus or car available both depends on budget and lot's of beautiful homestay and resorts available. Day 1 : Arr Bangalore drive to Coorg Day 2 : Coorg Day 3 : Coorg Day 4 : Coorg to Bangalore Drop Via Mysore Sightseeing.
You can go for home stay or maybe a resort. Coorg is good for both solo travelers or couples. You can book Coorg honeymoon packages or family package. Coorg has a cooler climate that lets you relax and unwind, lazily roam around in the little paths that lead to scintillating hills. https://www.tripoto.com/coorg/tour-packages