Hi,
Cost of living with the minimum bascic with electricity (without a/c) & water bill would be around Sri Lankan Rs.45,000/= per month. Rent cost for a two bedroom apartment in a condominium would be about Rs 75,000/= per month. But you can get an anexe of one or two bedroom for about Rs 45,000/= to 50,000/= per month in a house. But you will have to pay a rental advance of a minimum of 6 months deposit. Finding an apartment I can help you since I am a Real Estate Agent. You can contact me by email: kbjayah@gmail.com or by phone 0094 (0) 72 700 33 22.