So much depends on your own personal trip circumstances and choices.
I loved Barcelona because we went with a healthy budget and sought out fab little bars and restaurants. On a shoestring I might have have hated it, it’s not a especially pretty city to just wander, and I wouldn’t have been able to afford lots of the nightlife.
I didn’t enjoy Florence because we went in January and I stupidly only took a thin cotton coat. And we tried ticking off allll the galleries so I got Madonna and Child fatigue… should have broken it up more.
I didn’t love Barbados but it would be unfair to judge the whole place as I only saw one resort and one beach.
Loved Paris, Rome, Marrakech … I even enjoyed San Francisco, though this was 20 years ago.
Monaco isn’t really seen as a tourist destination is it? It’s a tax haven so not surprising it’s just a bunch of high rises and fiendishly expensive restaurants.
I might not bother with Bali based on this thread…