On the A340-600, row 31 in economy is usually the first row behind Premium Economy. On some layouts that can mean slightly restricted recline because of the bulkhead or divider structure behind you.
Sometimes airlines flag those seats as “limited recline” even if the restriction is minor, just to manage expectations. It’s not always dramatic like an exit row with zero recline. It can just be a few degrees less than standard.
The reason SeatMaps might not show it is because third party sites don’t always capture airline specific restrictions or recent configuration tweaks.
You’re right that those seats can look appealing since they’re often open. Some people avoid anything marked “limited recline,” even if the difference is small.
One thing to double check is whether there’s a lav or galley directly behind that row. On some configs that’s the real reason for reduced recline.
If you really want certainty, you could call Lufthansa and ask them to confirm whether it’s fully blocked or just slightly restricted. But it’s unlikely to be a huge difference.
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