A decision by the refereeing team not to allow a valid goal may have cost Hoffenheim a winning start to the campaign, but other than that, Gisdol was happy with his team.
He believes if they carry on playing in the same way, the breaks will start to go their way and the points will arrive.
"Not much actually went wrong for us," he said. "We want to play the same way against Hamburg as we did against Nurnberg, and if we can do that then that would be a beautiful present for my birthday."
Nevertheless, Gisdol is aware that Hamburg are in a different league to Nurnberg and that his team will be up against it.
"They are one of the best in the Bundesliga," he said at a press conference. "They have different expectations to us.
"For a club like HSV, Europe is the right aim as far I as I am concerned. They could have and perhaps should have beaten Schalke and so we cannot allow them the time to play their own game."
While Hamburg have not declared Europe as their aim for the season, particularly in view of their previous two campaigns, the way they performed against the Royal Blues on the opening weekend of the season augurs well for a challenge for the top six.
That game has also given them more self-belief ahead of their first home game of the season, according to coach Thorsten Fink.
"My lads are motivated, I can sense it," he said. "They desperately want to improve and there is a really good spirit within the team."
He was happy to see all his international players return unharmed from their midweek appointments, meaning he can name an unchanged side to the one which started in Gelsenkirchen.
Gisdol also has a fully-fit squad following Kevin Volland's return to training on Thursday.