That room actually not that hard (compared to the Frankenstein mask room), but the trick isn't that obvious. Here's the solution with a rot13 cipher. You can translate it at https://rot13.com
Jnyx fgenvtug hc gb gur pbeare, ohg qba'g tb evtug ng nyy. Jnvg sbe gur jbyszna pybfrfg gb lbh gb trg whfg cnfg rdhny gb lbh, urnqvat hc (abg qbja). Gura urnq fgenvtug evtug hagvy lbh pyrne gur unyyjnl (chfuvat ntnvafg gur jnyyf fybjf lbh qbja). Gura urnq qvntbanyyl hc naq gb gur evtug. Xrrc tbvat qvntbanyyl hagvy lbh ner whfg haqre gur gnoyr, gura urnq hc hagvy lbh trg gb gur gnoyr. Lbh fubhyq znxr vg gurer jvgu abobql abgvpvat lbh. Lbh qba'g unir gb uvg gur gnoyr, ohg lbh arrq gb or ng yrnfg evtug arkg gb vg. Gura dhvpx tvg oruvaq gur gnoyr naq jnvg va gur pragre bs vg hagvy gur arkg thlf pbzvat hc trg gb gur gbc naq ghea nebhaq. Gura eha gb gur evtug, naq tb qbja naq teno gur znfx. Chg ba gur znfg naq jnvg ng gur rqtr bs gur ynetr ebbz jvgu gur jbyszra. Jura gurl cnff lbh, eha fgenvtug yrsg, trg trg bhg.