Jetaway-
What will you be doing in Barcelona prior to or after travelling? If you'll be living with a family during a study abroad session or staying at a hostel for an extended amount of time, you should ask your host or the hostal owner to see if they'll hold them for you. If you have a decent relationship, usually they will help you out in that way. A friend of mine did that for about 1 month. Of course, it all depends on where you'll be and who's running the place, and it may cost you some money-or at least a token thank you gift for them- but it's worth a shot!!
-GG
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"Vivir con miedo es como vivir a medias."