I've tried the their three men's fragrances: Fuoco Infernale, Notte Bianca, & Vista Sul Mare, and their newest unisex: Porta del Cielo. These were all samples sent to me, unsolicited and free with a large purchase made from First in Fragrance not too long ago.
They were all OK, but nothing special IMO. I found them all very light and not long lasting. The one you speak of, Acqua Santa, I think was not included in my package as it tends more to the feminine side and I think the owner thought i would not like it. Don't know where you live but not the easiest line to find. I suggest you sample first. More info about the one you're interested in: http://www.ausliebezumduft.de/linari-acqua-santa-eau-de-parfum-2.html