I loved the overall presentation and the artwork/sprites for the guests. Its an interesting take on the tower defense genre with the guests being able to attack but will lose hp in the process so you can't rely on them for defeating the enemies (i guess it does cause a balance issue). My strategy was to click on the enemies on the ground floor before the elevator came down.. The project can be easily expanded upon by adding upgrades to the hotel itself and different types of enemies. Maybe adding more rooms as upgrades. More traps, interaction between guests..
Overall y'all did a great job!