Aside from the mystery about 2209, there are definitely 9 3BR Seafronts - 5 Lock Offs and 4 Non Lock OffsWhile there are dedicated 3BR and also 3BR lockoffs the units you buy are floating and you can book either.
I have tried several times to reserve a 3BR Gold Seafront lockoff at 13 months out (usually for June) and was always unsuccessful but always successful with the dedicated 3BR.
(Allegedly) 50% of the inventory is released at 13 months and 50% at 12 months. Based on post 5, there are only 5 3BR Seafronts, so maybe the changes at 12 months are better. I haven't tried...
We only own one 3 BR Seafront week here, so we book at 12 months out and even if it is not guaranteed we have always been able to book our week as a Lock Off to get 2 weeks, perhaps because it is Silver season?
The Deluxe Guest Room (Studio) is small by US standards, but it is the only MVC beach resort in Europe which offers these.
They are Seafront, with mini kitchens and balconies and they do trade well to larger units elsewhere.