The most common and most likely answer to this crossword clue is the 4 letter word RADA
R
A
D
A
Buddy explains!
The straight part
We know that "Excellent area for aspiring thespians" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case excellent area for aspiring thespians = rada.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 RADA mean?
RADA noun- A parliamentary body in a number of Slavic countries.
- A soviet, a form of governing council in the former Soviet Union.