I dunno, I can't think of any words I necessarily like the sound of, but I can think of tons of words where the spellings seem especially odd or malformed in some way, given how the word itself sounds. Things like "puddle," "soup," things like that. I don't know, the entire thing is kind of weird. In fact, human language as a whole is probably one of the oddest concepts ever.
Stupid animals making sounds to communicate with each other doesn't seem like an odd concept to me. Anyway, I'm a sucker for repeating consonants, so words like "railroad" are pleasant-sounding to me. Words with multiple "k" sounds are the best, such as "coffee can," "kayak," "kyaku," or "kokiri." One of my single favorite words ever is probably, "katakataka," shortly followed by "kilokaiser." The only other words of which I can think of which I like the sound are either proper names or fictional words, such as, "Falcane," "GaoGaiGar," and "D'nigdip"--or foreign words, such as "Youkai," "Biblioteca," or friggin' anything in German.
Speaking as an English Major (who didn't pay as much attention during this topic as she should have so can't go into detail), that's because English has gone through a lot of sound changes in which the spelling didn't change along, or spelling changes in which the pronunciation did wonky stuff. It makes pronunciation a nightmare compared to languages like German and Dutch because the spelling actually leads you to pronounce stuff wrong. I mostly stopped by to be a wise ass on that topic, but I guess for some reason I'm partial to the word 'inordinate'.
'Lobster' looks and sounds pretty funny to me for some reason. Or 'buccaneer'. I feel I should also mention 'colonel' because the pronounciation of it is such a mess