For most bachelor groups the choice comes down to three formats: a private vacation rental the group sleeps in, a hotel block, or a dedicated event venue you book by the night for a specific party. The right answer depends on group size, what you're actually hosting, and how much coordination you want to manage.
The rule of thumb: groups of eight or more almost always come out ahead with a vacation rental over multiple hotel rooms — lower per-person cost, shared common space, and the group stays together instead of scattered across hotel floors. Dedicated venues come into play when you want a specific experience — a rooftop buyout, a brewery's private room, a private chef dinner, or a yacht as a floating venue — layered on top of wherever you're sleeping.