Art Holidays Abroad also recommends:

 

Mosaic Retreats, based in the USA - MosaicRetreats.com

SISAM School of Mosaics and Frescoes in Ravenna - www.sisamravenna.it

La Grotta restaurant in Brisighella, Italy - www.Ristorante-LaGrotta.it

Spiros and his bus in Corfu - www.SpirosBus.com