Excellent Apartment in a superb location, right in the heart of Triana.
The apartment is clean and has everything you need, good facilities, furniture and equipment. Comfy beds.
Never met Sebastian or Ricardo, but they are sometimes slow to reply to messages, sometimes no reply at all.
Only problem with the apartment is that the power cuts out regularly if the heating / aircon is on. This wasn't mentioned, but other reviews suggest it's been happening for a while. If it trips out you need to switch on and off the first fuse in the box by the front door. This needs fixing really, it's annoying.
Was charged 20 Euro extra to check in as we were about 15 minutes after 9pm.
But other than that it's a fantastic place, and I wouldn't hesitate to stay there again if in Sevilla. You are a 15 - 20 minutes walk to the city centre, but everything can be reached, and Triana is a cool part of town itself.