While playing blackjack If you were the House, at what number would you hold?

The house holds at 17 or above in blackjack, and hits at any other number. you can get some insight about how the house regulates the tables from the site http://www.casino-apuestas.es/ . usalluy the dealer has no choice in how to play, they play strictly according to this rule so that the casino is totally in
control of the structure of the game and doesnot risk losing money by a dealer playing stupidly. It also avoids any allegations of cheating or collusion

Good answer, but let me clarify a bit more. Although most casinos will stand on a soft 17, some casinos require the dealer to hit it. A "soft" hand is one that has no risk of busting by drawing one more card, so a soft 17, for example,could be an ace and a six.