Malta - I disliked it so much that I bought a new flight so I could leave earlier. Food was very disappointing, hotels were below par, so many places only seemed to open for an hour or two per day. Bizarre.
Sydney - vastly inferior to Melbourne. It's just a city, nothing special. Sadly for me, my good friend who I'm visiting in Australia next spring has moved from Melbourne to Sydney. Argh!!!
Bali - hated it the first time. But the second time (for the wedding of aforementioned Aussie friend), it grew on me. Need to pick where you stay carefully to avoid the bogans though.
Dublin - meh and provincial. I fly via Dublin fairly frequently. Now I don't even bother to venture into town, I just stay near the airport. Although Dublin introduced me to Avoca so I'm ever grateful for that!
New Zealand - why bother? The people are nice enough but just go to Tasmania instead.
Toronto - dull dull dull. People were nice but....I gave it a second try and it was still dull.
Marrakesh - the same harassment so many others have faced. I resorted to hiring a private guide very time I went out in the medina. One was awful and clearly involved in the attempts to rip me off. Another was brilliantly bonkers and I had the most fun with him. I didn't feel safe on my own at all, and some of the riad staff told me some horror stories which confirmed my view. I still visit but hop in a car straight to the Atlas mountains now and stay in a lovely hotel there where the only time I'm 'bothered' is someone asking me if I want more water / fruit / wine etc.
Shenzhen - holy hell, what a nightmare! My top tip for anyone crossing the border from Hong Kong is walk as fast as you can straight to the Shangri-La where you'll be safe from the pestering. Although it makes a refreshing change that men can hassled more than women (the touts try to sell sex to them rather than bags and watches to women lol).
But I LOVE Paris. I've lived there twice (and cried when I had to leave). However, it can be a tough city when you're a young woman. It helped me when I got older as I got less hassle from men. But you also need to learn the rules. Don't engage with them, don't look at them, just keep moving. Be careful on the metro and in metro stations. Avoid the RER at night. Stick near other women. Learn how to say 'fuck off' in perfect French (if you can't get the accent spot on, best to say nothing and just scowl instead). If they think you're French, they'll generally leave you alone. If they think you're foreign/a tourist, it's like catnip for them. It's sad that this is necessary but it's the price you pay for enjoying all the good bits of Paris.
I also love NYC. But I've worked there a lot and have good friends there so it feels like a second home to me.
I went to SF for the first time this Feb. I loved it! I was nervous about the homeless problem there but actually I met some lovely lovely people (all Americans) and had the best time. It was still very quiet due to Covid but I can imagine not liking it so much when it's rammed full of tourists again. I did feel like slashing my wrists stuck on the tourist hell boat to Alcatraz.