The Drowning Wench seems like the easiest hotspot because it's the central location in Limsa, and people need to pass through it to get to most places on the upper deck. If you're trying to establish a set location for RP in Limsa Lominsa, it's probably best to have it somewhere visible. This is one of the reasons why I think the Quicksand has so many roleplayers, not just because it's a tavern atmosphere but because people need to go there. If you're a new player--or just a new roleplayer--you don't really want to hunt people down for RP, so finding it in an area where the game makes you go for quests and such makes it easier.
The Missing Member wouldn't work too well because it's so out of the way that people passing through might never notice it. The Astalicia and Fisherman's Bottom seem more like places you'd schedule some RP to happen, rather than places you'd go in search of finding other roleplayers. The Aftcastle could work too, I suppose, but the Drowning Wench has better atmosphere.
The Missing Member wouldn't work too well because it's so out of the way that people passing through might never notice it. The Astalicia and Fisherman's Bottom seem more like places you'd schedule some RP to happen, rather than places you'd go in search of finding other roleplayers. The Aftcastle could work too, I suppose, but the Drowning Wench has better atmosphere.
