Our Andaman trip was really good, the service provided by Travel Triangle and especially Sky Tours and Travels (Agent - Bandna, for a special mention :) ) was just right. We wanted to do Elephant beach tour, however due to some accidents the beach is closed for an indefinite time, so Bandna informed this to us well in advance, so we could plan our itinerary properly, and choose different routes. All the hotel rooms and ferry tickets were booked in advance, and the tickets were handed to us on the first day itself, so there was no confusions there.
Overall the trip was very good, no hassles anywhere, and everything went smoothly.