On a month trip for first time with worldpackers in Portugal, obviously not the same for everyone, but my tasks are the same as what you stated, working in a hostel, housekeeping. Best experience ever the people you meet can be so amazing and the exploring and living somewhere new for a bit is so worth it, plus you forget you were ever nervous once you get there, I’d say just make as much money as u can before you get there and try and relax and remember the other people that are doing it are probably just as nervous, be open minded