The most common and most likely answer to this crossword clue is the 7 letter word ENJOYED
I've seen this crossword clue in The Guardian
E
N
J
O
Y
E
D
More clues leading to the result ENJOYED
Buddy explains!

The straight part
We know that "Appreciated" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case appreciated = enjoyed.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ENJOYED mean?
ENJOYED verb- To receive pleasure or satisfaction from something
- To have the use or benefit of something.
- To be satisfied or receive pleasure.
- To have sexual intercourse with.