I have given this 3 stars and not 4 or 5 due to our experience from Karina, rather than the apartment itself.
I have had many excellent past experiences with AirBnB, but unfortunately not so with this booking. I booked this apartment on the strength of the reviews and all saying that Karina was very helpful, excellent at communication etc. My experience was quite the opposite sadly. She was always slow in replying to my questions. As requested, I gave her the details of our arrival at Seville Airport in advance and duly phoned her on the number as asked when we arrived, but there was a message to say that her phone was switched off! I subsequently tried three times on our way into Seville, but always got the same message. The taxi driver even tried for me, to no avail.
So, four of us were dropped off outside the apartment building 45 mins after we landed with no way of getting in! Fortunately, 15 mins after standing on the pavement thinking that we might have to find a hotel for the night (it was now 8.00 pm) someone who was staying in the building luckily came out. We explained our predicament and she kindly phoned another girl, Tatiana, who said that she would come round. We waited a further 10 mins and Tatiana appeared - she apparently works with Karina and said that Karina's phone had run out of battery!! We were not impressed by this at all - if this was the case, then why did she not use Tatiana's phone or ask Tatiana to contact us?
Tatiana took us upstairs and showed us round. Tatiana gave us two sets of keys and then left. When we went out to dinner we thought we ought to try all the keys. The apartment keys were fine, but one of the keys for the front door of the building didn't work at all and the other did if one jiggled it about a lot. When we got to our restaurant I called Tatiana and advised her about the keys, but she didn't seem to understand.
Early the next morning I received a message via AirBnB from Karina asking if everything was good (no apology or mention from what had happened the night before). So, I replied and a) told her our displeasure about what had happened the night before and b) explained about the keys and asked if a spare set could be delivered at 9.30 am that morning. I heard nothing from her for three days (by which time we were on to our 2nd night in Cordoba) when she advised that the keys worked fine, but you just have to play with it! Also, still no apology and explanation as to her behaviour the night we arrived.
The apartment itself was nice, although there was a very odd and not so nice smell, especially in the sitting/dining room/kitchen which we suspect was due to the drains. We had the double room on the front corner with two long windows. Although we kept these shut and had the air con on, the noise from the Friday night revelry went on until about 5.00 am and it was extremely noisy. I only read one comment about the noise, so didn't take ear plugs as I should have done.