Chelsea opted to rest first-teamers Didier Drogba, Michael Ballack and Michael Essien ahead of the midweek UEFA Champions League semi-final with Barcelona.
But despite the missing stars, Chelsea dominated the contest for long-periods and came away from Upton Park with what Hiddink felt was a well-deserved victory.
"We did well, first half we played very well," Hiddink told Sky Sports.
"The only thing we didn't do well was to finish it off considering our superiority in the first half. That's the only thing we can blame each other for.
"The second half we did more or less the same and we finally got the goal. Then I think we caused our own problems a bit by not taking full responsibility for our passes."