Went there on our second night in Chiang mai and returned on our third and last night as well. Had the clam chowder and loved it ( yes it did have clams ) , and the duck with prune sauce was excelent. On both occations I enjoyed an superb creme brulee to round it off.
As for the latest bad review you have recieved I can only tell you that there will always be difficult customers no matter how hard you try. Having been in the restaurant business for almost 20 years myself I undestand the frustration. As for the bad review you received from the person that did not even dine at your establishment, you should query that with tripadvisor as that seems most unfair.
Regards and thanks for a wonderful time