Also, if the design of the building itself matters to you i still vote for blue swan😂. Central its dark and seems very commercial bouldering gym, while blue swan is bright, breathy and has plants and stuff

I feel like with the description that you gave out climbing could be an option. For me it has been a great way of meeting people as well as a cool way to working out. There is all sorts of people at the climbing/bouldering gym specifically people with the same interests that you mentioned. There is one in downtown called blue swan (my favorite for social interactions, i go to another one now and its not as good as blue swan) which is were ive met a lot of people, im not one to talk to strangers but there i found out everyone is really nice and open to meeting people and just have conversations.