Possibility of moving to Columbo...should i go?? (Colombo)

Hi, I have just been offered a job in Columbo but am not sure of whether to take it. I currently live and work in Uk where I am from but have lived and worked in other countries ...so am used to being an expat. I do not have a family . So before I accept the job would like to know a little bit more from expats living in Sri Lanka what there advice would be and any negatives or positives or any feedback they could share with me??