Mango rooms is very well located located within the old town walls, although tucked away in a quiet spot. Staff were very friendly and welcoming. The room was basic but pretty good, and includes a fridge which we always find very handy. We were there only one night and didn't experience much of a hostel atmosphere.
This place looked promising but unfortunately, despite booking, we were unable to stay as the place was triple booked (see review below)! It seems the landlord people had already received a booking via airbnb and had failed to mark the apartment as unavailable on those dates on HW! To cut a long story short, we were moved to another apartment at 10pm at night as we were no match for the four angry ladies from Milan. The only consolation was the alternative accom was very nice.
Good free breakfasts. Wifi works well but only in bar and reception area.