I live in an apartment without a vent.
There is a hose for draining the moisture collected from spinning and dehumidfying and an extra lint filter to clean. it takes a little longer to dry, too. But I suppose it is better than risking a house fire.
Ideally I want a dryer and water heater that mine bitcoin then uses the 'waste' heat. Maybe the supposed new intels will work easily with water cooling.