Wife & I stayed there a few years ago - it was very, very hot in Sevilla (41 Celsius - more than 100 F). The hotel has a small swimming pool in the backyard and rooms are equipped with air conditioners. Either of those could come in handy.
It's on c/Monte Olivet - taxi drivers had a hard time finding it. But as I say, it's within walking distance of Estación Santa Justa. Be careful! We stayed 2-nights; when we checked out they tried to charge us for 3-nights.