Uncomfortable sleeping conditions on retreat

I was thinking about going to a retreat in thailand called suanmok and then I saw the picture of the bed. A straw mat and a tiny wooden pillow!!! why would they make people sleep like that? It seems like torture to me and so I decided not to go. If the Buddha didn't believe in asceticism why do some monasteries and retreat centres? At the very least I need to sleep comfortably when on retreat. I would just end up sleep deprived and grumpy and not be able to meditate properly anyway. I can't even sleep properly in my luxurious queen size bed with pillow top mattress most nights. Does anyone know of a more comfortable retreat?