I've stayed at BVJ before.
It's a good hostel, good location... make sure they do NOT give you the room on the roof. In the summer its like a BILLION degrees up there, and I literally had to sleep on the ground because the 2 feet made a difference in temperature.
About reservations - the best thing to do is to just call them to re-confirm. Second best is direct email contact with their staff. Third best is direct online booking if the hostel has a webpage.
Booking through travel websites like hostels.com (in my opinion) is a waste of time and money. It's a waste of time because half the time the hostel doesn't care about that you have a reference number, and waste of money because websites usually make you have some deposit.
When I was there, they didn't have a record of my reservation (although I booked in advance), but they had room, so all was good.
Vincent: "So what you gonna do?"
Jules: "Well, basically, I'm just gonna walk the earth."
Vincent: "What you mean 'walk the earth'?"
Jules: "You know, like Kane in 'Kung Fu'...go places...meet people...get in adventures."
Trips (only counting recreational travel):
FIRST TRIP (2005): FIRST EUROTRIP EVER! UK, France, Spain, Italy, Germany, Holland
SECOND TRIP (2007): First Solo Trip! Greece, Turkey, Syria, Spain
2008: China (Beijing, Shanghai, Yangshuo) ...right before the Olympics!
2009: Japan & HK, Southern Spain
[size=1]2010: All over Lebanon, Ibiza (Spain), Oktoberfest (Germany), Thailand.
2011: India (Goa), Jordan, Jerusalem, San Sebastian (Spain), Amsterdam (again), London, Driving from Vancouver to L.A. (stopping in Portland, Seattle, San Fran and all the little stops), Montpellier (France), Geneva and Lausanne (Switzerland)
"Bite off more than you can chew, then chew it."