"'Dystopia': An imaginary place or state in which the condition of life is extremely bad, as from deprivation, oppression, or terror."
Quite a broad meaning, if you ask me. By that, you could argue most of modern day Earth was a dystopia due to the deprivation of food, water, money, etc. The 'true dystopia' which is set in people's minds, my own included, is more about the latter two options, oppression and terror. 1984 would be the classic example. Yes, I suppose people aren't too well off physically either, but the dystopia is provided by the evil government and the constant fear of being spied upon. Have I a point in this little ramble? Not as of yet, so I shall change track. It has been a long day.
So, what do you mean by like? I like 1984 and its setting. As a setting. Like them as in would like to live there? No, thank you very much. Most definitely not. Even an environment like Mordor must appeal to an audience if you want them to like your book about it, and that's very different to them thinking it's a nice place because, as you yourself pointed out, that wouldn't then be a dystopia.