My husband and I are thinking of visiting in early October on vacation for a week. If I book now, do I pay the full amount for the week once I arrive?

if you book directly through our website luckydshostel.com. full payment is on arrival only. no commissions or booking fees. credit card info is required when you book online, in case of last minute cancellations and no-show.

Just know that this is a hostel (shared accommodations). I stayed there but was unable to stay long (5 hours). Not used to sharing rooms & bathrooms with strangers.

If its on hostelworld you pay like 10% and rest when you get ther, on Booking I think you pay anything before if I recall well

Not really you will pay some commission.