The building was charming with both classic, Seville features and modern amenities (new elevator, washer in unit, upgraded unit). The space was well decorated and had a lovely balcony space. We were walking distance to Plaza de España (~20 min), Alcazar (~15 min) and near old town bars and restaurants. We walked from the train station without issue (roller bags on the old sidewalks might be a challenge) and across town. No need for a car. Given you are up for walking about 20 minutes one way for most areas of town. The host that met us for check-in was friendly as well.
The downside was the sewage smell in the bathroom got progressively worse during our stay and was pretty off-putting. We were ready for our three night stay to come to an end because of the smell. We also noticed that ants made their way in from the outside area into the unit (even into the bed). Not absolutely unexpected to have some bugs make their way into the unit since the space opens to the outside.