This is such a cute place! We pretty much booked it for the terrace, which we made use of even though it was pretty chilly most of our trip. It was nice to buy some wine and relax out there. The view is mostly of other rooftops, but it felt very "local" and comfy.
It was very quiet and clean. The TV had Netflix, which always makes us feel more at home! The bed was comfortable, and the "kitchen" was tiny but it worked for the basics. There were other little touches that were nice, like bottled water, coffee, etc. Those things make a difference. There are a lot of cubbies in the closet for unpacking, and a safe, although we felt safe enough to not need it.
The location is awesome... only a 3-minute walk (if you are in decent shape) to the main street that Triana Bridge is on. That street has tons of restaurants and bars, and taxis if you need one (but you probably won't, unless you need to go to the train station or airport). The big touristy places like the Alcazar, Duenas Palace, Las Setas, and Plaza de Espana are all about a 20-minute walk away... not super close but it's so nice to wander the streets of Sevilla, I recommend walking everywhere if your health and the weather cooperate. Triana (the young and "cool" district) is less than 10 minutes away if you're walking. There are some amazing places to eat and drink very close to the apartment (you have to try La Azotea down the street!), as well as a lot of great shopping at all kinds of price points.
We never met Carlos, but Susanna was there when we arrived and was so sweet. It was actually the first time we ever had a host greet us in person, so it was a treat. She speaks excellent English and gave us an in-depth tour of the place and gave us lots of recommendations. Any time we needed something in the chat, we got an immediate response from one of them. She even sent us information on the history of our Spanish surname. They were great hosts with a great place, I definitely recommend.