Al Safwa isn't a hotel and I don't understand the logic of using it as such. Doha hotels are incredibly affordable and much better use of one's time. If you are paying so much for your flights get a good sleep at a hotel and come back 3 hours before for the lounge experience. You will be pacing around bored after 3-4 hours otherwise. Also day rooms can only be used once per visit for 6 hours max.