I stayed here for a full month and loved it!
The apartment is clean, modern, and spacious. It has everything you need to stay for an extended period of time - full kitchen, washer/dryer, fast WiFi, efficient AC. If you're looking for a place with space to work remotely, there is definitely enough room in the apartment to set up shop without feeling overcrowded.
The neighborhood of Triana is absolutely lovely. It is a bit more residential than the city center, but there are plenty of restaurants, and it's a lively area at night! We loved walking along the river in the mornings and evenings. The apartment is about a 15 - 20 minute walk to the main shopping district and historical monuments, which we found to be very doable. Overall, loved the location and being a Triana resident for a few weeks.
Check-in was quick and easy, and I found the owner(s) to be very responsive the few times I had questions about the apartment. Thank you!