A 8 - 10 mm synthetics rope with sheath should be fine. A belt and a figure 8 descender would make it easier. The length of the rope will limit the height. A dynamic rope may help if you have to fall before the rapel. You should bear in mind that you would need a propper anchor point and the option to go out of a window. Air conditioned rooms sometimes have windows you canīt open. Breaking the glass wiil leave sharp edges or even glass shards that could damage your rope. Either way edge protection is mandatory.
As you ask about the rope I assume that you donīt have experience with rapeling. You should try to find someone who will show you how to properly handle your equippment.
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If it isnīt broken, it doesnīt have enough features yet.