A honeymoon package is really a different product from a standard tour package, even when it covers the same destination. The stay usually shifts toward a private cottage, boutique hotel, or couple-friendly homestay rather than a shared dorm or large group hotel block, and the itinerary trades sightseeing volume for slower mornings and fewer forced group activities.
That difference is exactly why comparing operators matters more here than almost anywhere else - two "Manali honeymoon packages" can differ enormously depending on whether the stay is a shared guesthouse or a private valley-view cottage, and whether transport is a shared tempo traveller or a private cab. Destinations like Manali and Kashmir are consistently the most requested for their mix of scenery, privacy, and manageable travel time from most Indian cities.
As verified operators list their honeymoon-specific packages on PickThePackage, they'll appear in the live listing below - in the meantime, use the destination pages linked above to compare general packages and ask operators directly about private-stay upgrades.