hi and welcome to dalaman, we are paul and jane and we live the airport side of dalaman near opet filling station,as for cleaning companies a new one has opened opposite bim we have no idea what they are like as have only been open a couple of weeks, we can get telephone number for you if needed.
internet access is usually through tt net but obviously you need a phone line and a residency permit to obtain one (or a friendly turk who will do it in their name)or did you mean internet cafes? there is one on every corner in dalaman town centre.
if you have any other queries we will try to help you