Two of my IPs have heavy curtains covering the lounge windows (which are from almost floor height), providing full light blockout. They are now old and in need of replacement. My property manager has got quotes for new curtains, but also for blinds as an alternative (which are half the price of the curtains). The blinds quoted on were this style of "blockout" roller blind - http://www.ozblinds.com.au/roller-blinds-blockout/vibe/ which we actually have on our kitchen window at our house and I think they work quite well in that context - but I'm not sure about using them on the lounge windows. What do people like to use for lounge room window coverings in their IPs?