As mentioned, Yachtworld is really good for this.
For a while, I have been bookmarking or downloading images I run across of tasteful or creative window treatments, bulkhead finishes, head remodels, etc.
For example, you can select "aft cabin" and then a year range. Look in detail at the ones in the upper 1/2 of the price range and you'll find the better maintained ones and some good ideas.