I spent 28 hours in Japan Airlines' business class. It wasn't the best I've tried, but I don't regret upgrading.

• The seat was comfy, even after it became a lie-flat bed, and I enjoyed the in-flight meals.
• I wish my aisle seat had felt more private, but overall, this was a solid business-class experience.

We kicked things off with a stop in the Finnair Business Lounge in Helsinki.

The business-class layout was 2-3-2.

The contents of the amenity kit varied slightly on our different flights.

This wasn’t the best business class I’ve experienced, but it was still a real treat.

Despite all that, this upgrade was worth it to be able to lie down properly and have a bit more personal space. The staff was very polite, and my husband and I enjoyed all the luxuries you’d expect from business class, from Champagne to lie-flat seats.

I didn’t sleep a wink on the flight back (it was daytime), but the upgrade was still a great value, and I feel really lucky to have had the experience.