We stayed in Seville 5th – 17th Aug 2018 and enjoyed our stay, especially the local markets.
The place as two double beds upstairs and a sofa bed at the bottom. So if we had 6 people we had planned for, then you would be on top of each other as the place is compact with noise easily travelling from downstairs to upstairs. That said everything worked from the internet, aircon and showers. The beds were comfortable and the Sofa bed was OK if you use it a day of so.
The kitchen was well furnished with a large fridge – everything was clean.
The big issue we had was nothing to do with the apartment but the weather. It was crazy hot (36C – 40C) which meant that you could not really do much during the afternoon – everything was closed and you end up walking in the heat.
Our general recommendation to others is to definitely book this but not in the peak of summer.
The host was helpful and when we had a late flight she was able to let us leave our luggage.
Summary: clean and nice place to stay but please choose the time of year to visit carefully.