There were 4 of us, all adults, in the apartment for 3 nights.
The good things: The apartment is very center, just off the main street in Sevilla so you can pretty much walk everywhere. It was clean, communications were smooth and fast. Hosts provided a booklet with information that one might want to know when visiting the town. The washing machine didn't work but it was fixed in a timely manner the next day.
What can be improved: It's on the second floor and the windows aren't that soundproof so you can pretty much hear everything on the street. It can be noisy as it's the main stretch of town. If you expect a home away from home, this isn't it. It's a service apartment with minimal amenities. The espresso machine didn't work when we were there, and there were 2 coffee pods, no tea, no sugar, no salt or pepper, etc. We were provided with 2 thin duvet (without any duvet cover). Two of us had to use the towel as duvet on our first night. We then searched the apartment and found a double duvet on top of the cupboard which was teared/damaged (without cover), so we asked for a usable duvet. The host came when we weren't there, and left a double duvet with a tear and without cover. I don't know if it's the same one we found earlier, but one we found weren't there anymore. So we used the bare duvets (including one with the tear) as it was too much hassle going back and forth.
We wouldn't stay there again as we as a family want to seek a homely experience when using airBnB, or at least a place with tea, coffee and enough bedding. It is however can probably be appreciated if you travel with a group of friends who just want somewhere centre and convenient with enough to get on.