Here is the full list of all 12 Extended Stay achievements.
Start a new game.
Fill the staff room to it's capasity
Max out a guest's satisfaction.
Build the strip club.
Successfully pay rent 3 times in a row.
Have $5,000 cash.
Have $10,000 cash.
Have $100,000 cash.
Build all amenities.
Own all clothing sets.
Build a new guest floor.
Get a characters attraction to the maximum.