German sounds a bit rough.
I used to hate how French sounds but now i like it. It sounds very poetic, melodic.
Spanish sounds hot. I think it's a very nice language
Russian sounds sharp. Some voices (i think they are rrrr, sss, ççç) can be disturbing sometimes. It is the same for other Slavic languages.
You can seperate American English and British English accents easily, even your native language isn't English. American English sounds more simple. British English accent is more different. It sounds like French to me sometimes and sometimes British accent sounds funny to me because they talk really interesting
This is a very interesting topic. I always wondered how my language and other languages sound to people. Languages issue always attracts me already. I think how languages sound is related with our main language, what we hear everyday. You can get used to every language when it disturbs you first and even start to like it. It happened to me for French