Hmm maad,
you reminding me of my fun days:). when in goa try and stay at fort aguada beach resort. amazing place. The beaches to see are calangute, Baga and anjuna. The flea market at anjuna, u will still get to see a bit of hippie culture alive out there.
Go to Vasco to see the old fort, panjim city is not much to see, u will get to see a lot of cruises like we have here on the creek which take you through the river to enjoy the scenes of Panjim.
Sea food is very cheap. In short enjoy the sun, laze on the beach have good food and get pampered.
If you cant make it at fort agauda , cidade de goa, ramada, leela kempenski are a few good options.
cheers mate, hope you enjoy your trip, would like to see your pics in goa once u get back
cheers,
Jerry