Negombo offers many options to sleep in. Depending if you are going to stay a couple of days and enjoy the beach or if you are just on a stopover and only need a place to stay close to the airport, you can choose the one that suits you better. Many cheap places with good quality and amazing staff running them. Depending on the season, prices change a little bit still, these options are usually under $10 USD for a dorm bed and are definitely worth their value.