We have used many guides in Europe over the years, and Art was by far the best.  Unfortunately, our trip to Luxembourg was badly impacted by new and rapidly changing governmental COVID restrictions, but Art was always ready to help us work through them.  He was engaging, flexible and incredibly knowledgeable about Luxembourg and the surrounding area.  He helped us turn what could have been a COVID-induced disaster into an enjoyable trip.  Art truly cares about his guests and has now become a friend (as well as a guide we hope to use again).