The newer 71st Street location of Udånder, a Scandinavian-style day spa in Nichols Hills. Its private steam and sauna lounge has a eucalyptus steam room, an aspen sauna, a cold shower and a relaxation lounge, reserved by phone as a private session from $54 per person for one hour, with longer group sessions for up to ten people. Massages and facials are also offered. Open daily, until 8 PM Thursday to Saturday.