Dear friend,
We have thought every day since we've been home about our visit with you. It has made a tremendous impact on all our lives. The day was perfect and we have you to thank. You did a great job in planning, arranging visits, translating (including smoothing over conversation sticking points), setting up a great lunch, and accomodating eveyone's needs.
Please stay in contact. I am sure we will have the chance to meet again.