The order
The adjective follows the noun.
rumah besar ‘big house’, literally ‘house big’
kopi panas ‘hot coffee’
This is the same reversal you met in nama saya ‘my name’, literally ‘name my’. Indonesian puts the thing first and its description second, consistently, everywhere.
No verb needed
As with ini and itu, a description needs no equivalent of “is”.
Rumah ini besar. ‘This house is big.’
Kopinya enak. ‘The coffee is tasty.’
Three words, no verb, complete sentence.
Very
Sangat besar ‘very big’ is correct and formal, and it goes before.
In speech, banget goes after and is far more common.
Besar banget! ‘Really big!’
Enak banget! ‘So tasty!’
What the book says: Makanan ini sangat enak. What you’ll hear: Enak banget!
A word worth its own paragraph
Enak covers tasty, but also comfortable, pleasant, and anything that feels good. A chair can be
enak, a job can be enak, sleep can be enak.
It is one of the highest-frequency words in the language and one of the first that will start arriving in your head before its English equivalent does.