Pros: location (very close, walking distance to attractions, cafes, restaurants)
Cons:
1. If you have very heavy luggages, it may be really hard for you to climb up and down 6 flights of tiny narrow stairs. There's no elevator.
2. It may be awkward if you re not comfortable to use the toilet and shower "openly" with your roommate. The bathroom isn't separated. It really is just a studio.
3. Bring your own toothbrush, hair shampoo and hair dryers and stuff.