Arrived outside hotel at Spanish place which blends in well with surrounding environment (9)
I believe the answer is:
chameleon
'blends in well with surrounding environment' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'arrived outside hotel at spanish place' is the wordplay.
'arrived' becomes 'came' (come can mean to appear or arrive).
'outside' means one lot of letters goes inside another (some letters go outside others).
'hotel' becomes 'h' (phonetic alphabet).
'at' says to put letters next to each other.
'spanish place' becomes 'leon' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'came' placed around 'h' is 'chame'.
'chame'+'leon'='CHAMELEON'
'which' acts as a link.
Can you help me to learn more?
(Other definitions for chameleon that I've seen before include "blender" , "Someone who changes position to suit the situation" , "Variable-colour reptile" , "Self-camouflaging lizard" , "Lizard that can change colour to match surroundings" .)