Unwatuna is a small village in the south of Sri Lanka nearby Galle. You can go to Unawatuna with train from Colombo. Unawatuna has hos own train station but you can also go to Galle and then take a taxi from Gally to Unawatuna. (4 Kilometer)This is the cheapest way because the prise is only about 300RP for a uncomfortable wagon. If you like a more comfortable wagon the price is about 1000RP. You can also go by bus or by coach. The price then about 500-2000RP. Finaly cou can rent a taxi. The price for a taxi is about 6000-9000RP for one way.
You can rent at the beach in Unawatuna many nice rooms. The prices are from about 600RP until 200USD per night. The most rooms are very plain. It is very important to negotiate for a good price. If you stay only one or two nights, it is will not get a big discount but if you stay one or two weeks you should negotiate a 30-50% discount.