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Hotel Minmus

[Stock] Luxury travel destination for your kerbals, capable of supporting 23 kerbonauts [27 if you include podless seating]. 8 thud engines give it plenty of TWR, enough to hop around on Kerbin. Includes 2 mini clamp-o-trons, one low and one slightly more elevated on the opposite side to aid with expansion. It was fairly well balanced before adding the cupola module, with the disabled fuel reserve on the side providing the right amount of ballast. However, there are enough reaction wheels to compensate and allow you to do pretty much whatever you need. It even has parachutes to allow for survivable landings on Kerbin [part loss is to be expected].