Lelit Elizabeth descaling

Hi all,

I am considering buying the Lelit Elizabeth, but the descaling of the machine seems pretty complicated to me (compared other machines). I have watched the video by Lelit, but wondering what your view is on how to do it. Can you for example get all the things you need to do it (recommended descaling liquid, the water hardness filter, and the small filter needed when removing the water hardness filter)? I have been searching, but I cannot seem to find the small particle filter. Is this included by default?