Contact the dialysis units and ask for their requirements for accepting you as a transient patient. When traveling from city to city, take into consideration train connections and travel times. You can contact the units yourself in a couple of ways. You can fax the units to request information, check availability or reserve a spot. You can also call European units directly.
Many countries use English as a second language.
This service is expensive but it allows you to contact units yourself when English is not spoken. Holiday International is a division of Fresenius of Italy. They can prepare dialysis for you anywhere in the world, particularly Europe. Best of all, you can arrange everything through one office via e-mail and fax. This is easier than calling each unit individually from America, especially if you would have to use a translation service.