Love Sri Lanka and Singapore; disliked Bali intensely, except for Gili Air.
Enjoyed Florence, but it was a work trip in January. Hamburg was great. Visited Brussels fairly regularly for work and with family and always enjoyed it, but have yet to visit Bruges and Antwerp which I am looking forward to. Did not like Amsterdam much, nor Rotterdam (both work trips). Northern coast of Spain, especially Santander and Asturia was lovely, but not southern Spain or Portugal.
I was surprised that I didn't like Canada very much (dull, bad food with horrible campsites, huge mozzies and frequent drug deals) although the Vancouver waterfront was lovely. Much prefer the US, although I lived in NYC for a long time; have had good and bad trips in California.
Fiji was okay (but wouldn't return); loved NZ, especially Nelson and Awaroa Beach, also Wellington and Bay of Islands.
I have also really enjoyed Dubai and Oman, but these are family visits rather than tourist trips.
And have spent lots of time in France, mostly in Provence (adore Arles, less keen on Avignon; Aigues-Mortes and St Remy are also lovely) as we had a boat share on the Canal du Midi several times, but not very keen on Carcassonne (touristy). Brittany is very patchy for me. We had a very wet week there once in the middle of nowhere, which was depressing in the extreme, but the gulf of Morbihan is wonderful with great beaches. And when DS was tiny, we went to Ile de Re several times (friends there, and we rented a nice gite through their contacts) but it wasn't peak summer, which I am told is to be avoided at all costs!
Saving the rest of Europe for my dotage.