Have used it for 2 days now and can say it does keep my coffee warm for several hours. Love the colour and how small and cute it is. However, after I wash it, I can still smell my coffee lingering inside even though I washed thoroughly already. But luckily this doesn’t affect the taste. So I guess ceramic also will have residual smell. My tiger does perform better in this aspect cause I never have issue with smell or metallic taste. But this is still a good cup to have, picked this over Sttoke cause I like how the cover is screwed on and is very secure, so 100% won’t spill even when it’s being thrown around in my bag. One comment is the inner splash lid thing is actually quite hard to pull out, need use some force to yank it out. Design of this could be better.