This apartment is surprisingly spacious and well decorated. Our group of 13 people spent a single night and could all sleep fairly comfortably with just 1 air mattress in addition to what was provided. Just be sure to bring extra pillows and blankets if it might be a cold night - the living room is a bit drafty. You may also want to pack an extension coord/power strip, but that’s with any travel really.
All said, Todd is an awesome host!