Good points: Carla's place is 5 min. away from the bus station and 25 min. away from the subway station. Carla was very responsive via Airbnb. She's also kind enough to give me extra blanket and lend their electric kettle. The place was very clean and tidy. The rate was really good for money if you're a budget traveler.
Weak points: There's a baby in the place so expect to hear him cry every now and then. The blanket was too thin and the towel provided in the place was very small. It's a face towel, not body towel. Make sure you'll bring your own.
Friendly reminder: please make sure you'll be able to call to Carla when you check in because she doesn't call, you must be the one to call her.