The Crowne Plaza Paris Republique has fairly big rooms with two double beds which are only marginally more expensive than their standard rooms. It's one category above the standard room. You can try to send an email to the hotel, explain your situation, and ask whether as a platinum member they are willing to confirm an upgrade from the standard room to the 2 double beds superior (which can't be booked on points). If you're lucky they will do it for free, otherwise you may need to pay the difference of approx. 30-40 Euro per night. It's 45,000 points per night though...