The bed number is NOT guaranteed. You can later send the hotel a request and ask them to keep it in mind. Sometimes such a late arrival is not conducive to that, but if they DO have two beds, they will give them to you. I like to call or write the hotels if I have a special request and to re-confirm all is in the system. I have never had a problem. This is a perfectly safe system. You also must take your computer confirmation from Priceline. Remember you are not bidding for a specific hotel but a star level and zone with specific dates, of course perhaps hoping to get a certain hotelyou have seen on the wins posted. Be sure to check every time before pressing "buy my hotel now" that your dates and zones and price are exactly correct as you cannot change or cancel any of the Priceline or Hotwire reservations. Is there any reason you do not want MTE at 4* level? Many very nice hotels have been won there. Pay attention to the bidding amounts, especially if you decide to ADD a LOWER star level. The moderators will suggest a price drop, I am sure, so that you do not OVERBID. If you want to start bidding today without waiting for more answers I would copy someone else's bid exactly prudently and see what happens, starting low, but staying at 4* until it is absolutely necessary to reduce the bids. One piece of advice. You need to write your bids on a piece of paper, and also CHECK the free re-bid zones ( if you need to use them)everytime you are going to use them as they COULD change from one time to another if Priceline adds a hotel to a zone that YOU think there IS no star level. I hope this helps, digame. I thought I would mention these things as the moderators are asleep at this time of day I assume and I was attracted to this post becasue you, too , are here in Valencia! I don't give advice on the bidding process.. I just use Priceline for as many trips as I can when I don't find good rates for the hotels. Also,when you get email answers from Priceline do not be tempted to re-initiate your bid through that email. Come back here and do it from here again.