First I booked a bed in a mixed room, but It was very uncomfortable, because there is no privacy to change clothes. WC is in the room, so you can't even go out of the room to change your clothes. I wouldn't recommend to book a bed in a mixed room. Reception was very kind and helpful, they found me a bed in a room for girls and I moved there. Overall Reception is super nice, I loved them all!!
Breakfast is very poor. For the same price in TOC Hostel Madrid it was much much better.
Location is fabulous- in the heart of Sevilla. Close to everything. You can walk to all main sightseeings. Restaurants, shops, metro, tram, buses all are very close.