Hi kelar419! Most non-Spanish speaking people prefer to email their reservation requests and they'll reply in the same way. Just keep it simple with your requested dates apart from the rest of the text of your email. Simple like:
Arrive at 5pm on June 5
2 nights
2 persons
double bed (if requested)
If you don't get an email reply within 7 days I would email them again, wait 2 or 3 more days, and then call them. Usually though, most hostels will reply within 3 or 4 days, but rarely within 24-48 hours.
The above goes for Barcelona as it goes for Madrid or Sevilla or Santiago de Compostela. Email them in English, make it simple, or make it simpler on them and write to them in Spanish. I'm sure your 7-years of Spanish will do nicely here.
Good luck! Saludos, MadridMan
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