I have one to and they can get quite hot so ventilation is neccessary. I have a fan in the bathroom and people call me crazy for this.
The way I'm doing it is right after I take a shower, I will close the door and let the humidity trap inside and it last a good 2-hour for me I believe. I also spray the plants afterward whenever I remember, and I turn on the fan whenever there's presence of high humidity and/or water on the leaves. So far so good....you can see it here...
My grow rooms