I talked with the Hungarian Ionos and they sold the products of the Polish company, but I needed an english IP address for a project. I needed some simple solution that simply works and has an admin interface behind it, that's why I ordered my first VPS at ionos.co.uk. I have found that the english customer service is helpful, also available by phone, but they also help quickly in chat.
If I hadn't needed engilsh IP address than I would have gone to an old partner, the hungarian Integrity Ltd., where the situation would have been even simpler. They are very flexible and available at any time. I really like working with them.
For me, Ionos has made it easier to choose the admin interface because they offer Plesk by default, which customers liked as well and doesn’t seem like a bad choice from an operational standpoint either.