Had actually sent them the below via email as feedback but, their email address is down. Decided to share this on tripadvisor then.
I've been patronizing Black Swan since 2014 and what makes me return is the consistent quality of food and service. Today was the 1st time that i experienced a different dining experience.
Service
1) when shown to our table, staff did not pull out the seat for me (i'm sure you'd agree that even staff from mass restaurants e.g. Ichiban, swensens pull the seat for the female guest)
2) staff did not offer to place the napkin on my lap
3) the reservation card wasn't taken away from the table
4) when the bill was given to my partner, typically the pen would be ready and after signing the bill, the staff would pass the diner's copy and card to the customer. This did not happen on this visit.
Food:
1) i ordered my usual choice, barramundi. Previously the dish would be served with this thin cracker-like garnish, but this time there wasn't any. The papaya and pineapple salsa used to be light and appetizing, today's was more spicy and oily than usual. Barramundi was also slightly firmer than usual, probably overcooked.
2) chocolate dome. We never fail to order this dessert and we were initially impressed that it was served almost immediately after our mains were cleared. I later realized the cake seemed to have somewhat melted and started to "sweat", and the plate wasnt cold (it usually is). Probably it was prepared and left outside while waiting for the mains to be cleared, which obviously shouldn't be the case.
I'm not particular about all the above, some doesn't even matter to me eg the napkin. However, i wanted to highlight the number of differences that i have encountered this evening, compared to the past dining experiences.