Good location. The historic city center is reachable in less than 20 minutes on foot. Calm environment due to the apartment being situated in a small street away from the main traffic.
Cozy.
Carlos is a great host. You can rely on him to always answer your messages quickly and friendly. He even created a city guide for Sevilla in different languages.
Only cons: a lack of kitchen towels, some lids for the pots were missing and the floor could have been cleaner. Also the cleaning staff used too much fabric softener for the towels, which made them hold less water.
Just minor complaints though, the overall experience was good and we would come again.