Yes -- being "tasteful" and having "good taste" -- two different things, I think. Tasteful implies a certain conservatism to me -- being able to choose something that will keep up appearances and not rock the boat. Someone who has good taste knows herself well enough to find things that suit her and are also stylish.
FWIW, I think a lot of us choose home fixtures a little differently than we choose our wardrobe, since you have to factor in if/how it will affect the property value. If you plan on selling in 5-10 years, hardwood floors and granite counters are probably good, albeit boring, choices -- durable and "timeless" more or less. Chevron wallpaper and shag carpeting, not so much. (Of course, maybe this is just me, and other people are like "Whatevs! Self-expression is all!" I do strive for durable and timeless in my wardrobe as well.)
Also -- I think being "in good taste" carries a totally different meaning than "having good taste". The former is wearing something simple and black to a funeral; the latter is rocking a pearl choker and culottes before the magazines start telling you to.