I stayed at Jasmin's place for a week in Sept 2015.
Pros: The apt's location couldn't be more perfect - very central, yet quiet. As a woman I felt safe walking in the neighbourhood coming back late. The room is spacious and airy with good natural light. Jasmin wasn't in town and her friend Julia was taking care of the place, she was very helpful and friendly. I had the apartment to myself for the first two nights, then a young woman booked the other room for the remainder of my trip, Jaz was very nice and it was lovely running into her in the morning and chatting on our experiences in the city.
Downsides: The (gas) water heater sometimes goes off on its own and I had to take a cold shower once as I couldn't turn it on. I must say though that Julia did come to apt later that day to turn it back on once I told her. Apartment cleanliness 7.5/10. There is no clutter per say but could tell that apartment (and especially washroom) weren't cleaned in at least a week. The building is a walk-up and the apartment is on the 4th floor so bear that in mind (and apparently 4th floor in Spain is really the 6th floor!).
This was my first airbnb experience and I was definitely an overall good one. the downsides in the apartment were minor and I'd recommend Jasmin's place.