I know in Phuket have nursery homes, like we call in Belgium "service flats" or "residential care center" at much cheaper prices and more service ( have more staff and time to take care of you )
depends on where you are in Thailand You can apply for the 30 days extension 7 to 45 days before your first 60 days end Depends on the immigration office Takes usually approx 1-2 houres and costs 1.900 thb
If you have a dutch passport, no need to apply for visa You get 60 days visa free which you can extend at local immigration for another 30 days A visa will give you same period