I want a best beach resort in goa?

There are quite a few resorts in Goa....I dont know which would fit your needs though. Please check out travel sites like tripadvisor.com, venere.com, travelguru.com for various hotels, boutique hotels, B&Bs and resorts. These sites would give you full details of the accommodations including prices, pictures, guest reviews and popularity ratings. You could try Taj.