We had an amazing stay at Maria's apartment (family of 4 with teens). It's a very unique apartment (more or less a house) with a garage at the ground floor (which we used), the living quarter being on the 2nd level and one more bedroom on the rooftop which we didn't use.
First of all, the location: the apartment is very well located, easily walkable to the main highlights of the city as well as the cool neighbourhoods (Triana, Santa Cruz etc.). Otherwise it was pretty easy to flag a taxi from one of the main street nearby or there is also a spot where you can find a bunch of electric scooters and bikes for rental 2 mins away from the apartment.
Both bedrooms we stayed in were super comfortable. Air conditioning in the bedrooms and living room worked well during our stay when the outside temperature easily reached the 40C level.
The kitchen was well equipped along with the basic essentials and more than adequate for the level of cooking we did (mostly breakfasts). There's conveniently a supermarket nearby (Carrefour Express). We also did a batch of laundry using the washing machine that was available to us and it worked well as well.
We had breakfasts every morning on the patio that is accessible directly from the kitchen and spent our evenings on the rooftop patio from where you can even see the Cathedral's tower!
The check-in/check-out process was extremely smooth and Maria was super responsive before and during our stay.
Overall we had a great stay and felt very much at home! We highly recommend Maria's apartment!