Potentially water there. This is the only thing we can narrow it down to. 3 of our party of 8 people have been violently sick and had diarrhoea overnight. Other symptoms have included feeling feverish and achy 3 of our party of 8 got sick we had dinner then left the restaurant around 1030pm went straight back to the hotel to bed (no other food or drink was consumed) approximately 130/2am we all had diarrhoea and were being violently sick. This continued for several hours during the night. We had ordered bottled water but we think perhaps the second bottle had been refilled with unfiltered water. This is the only thing the 3 who got sick have in common. We each ate different things and some of the party who didn’t get sick also ate the same as those who did get sick.