54cm frame for a 5'7 rider?
that might be one or two sizes too big for you, but it should be possible to fit you on it by using a short, 60~70mm stem, assuming your seatpost doesn't bottom out in the frame with the proper leg extension.
OP may be built like me, long legs & arms- well, long for someone who only stands 5' 7".... I rode a 52cm for a few years and always felt cramped regardless of stem, saddle fore/aft, etc. My last 2 road bikes have been 54cm and I've never been more comfortable. Stem isn't
super short (90mm) and I feel like I've got plenty of seat post showing (~15 cm). On the occasions that the LBS guys have seen me riding, they've asked if I'm on a 52, so I guess I look proportionally correct. YMMV.