The best option is undoubtedly the youth hostel, which is cheap, clean and only 5 minutes' walk from the Faculty of Physics. For more information:

http://www.reaj.com/info-albergue.asp?id=78

  1. ALBERGUE INTURJOVEN SEVILLA

Address
ISAAC PERAL 2, 41012 - SEVILLA (SEVILLA)
Phone number
902510000
Fax
955056508
Information and Reservations
902510000
E-mail

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Web Page
http://www.inturjoven.com/es/albergues/albergue-inturjoven-de-sevilla.html