Simple brick home with retro interior (5)
I believe the answer is:
adobe
'simple brick' is the definition.
'adobe' can be an answer for 'brick' (adobe is a kind of brick). I'm not certain of the 'simple' bit.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for adobe that I've seen before include "house" , "Clay for mud bricks" , "Clay dwelling" , "Mexican mud and straw brick, and the hut made of it" , "Clay used for sun-dried bricks" .)