ALEKO 6-Person Indoor Hemlock Wood Sauna Room. With an indoor sauna you can enjoy luxurious self-care any day of the week and at a time that best fits your schedule. Restore your body in a sauna that is steamy or dry — you get to choose. Simply pour water over the rocks to produce steam and increase the sauna’s humidity levels. This indoor sauna is made from Canadian hemlock wood which is considered one of the best types of wood for saunas. It is also a low-scented wood which makes it a great option for if you have allergies. The sauna door is made from tempered glass designed to withstand extreme changes in temperature.