It wouldn't cross my mind not to clean a self catering place before I left. My parents always did, my siblings do and my DH thinks you should too.
I could not leave knowing the bathroom and kitchen were not clean and we had not hoovered all round. I strip the beds to help the cleaners out. I obviously wouldn't dust but I would always do the basics.
Also have been a chambermaid and also having cleaned holiday lets here and in France I know how some people (far too many) leave places. If I can make it a bit easier for the cleaner why not? They only get a certain amount of time to clean and so often the people leaving are late going and the people arriving are early which makes it even more difficult.
Some of the places I cleaned people had left dirty cups, plates etc literally all round the house, pages of newspapers and magazines strewn all over the floor, tissues all over the floor, crumbs on the carpets, on the sofas etc, filthy cooker and hob, spilt liquids on carpets, sofas etc. All that takes quite a while to sort out and I still had to strip beds, remake them, dust, hoover, clean bathrooms and kitchen, tidy etc