19.5 Incorporating group predictors

• Model ends up looking complicated

• But including it is relatively easy!

airbnb_model_2 <- stan_glmer(
  log(price) ~ walk_score + bedrooms + rating + room_type +
    (1 | neighborhood), 
  data = airbnb, family = gaussian,
  chains = 4, iter = 5000*2, seed = 84735
)