Yeah, I know someone who filled out a special accomodation form for a room with a washroom, and while she didn't get her first choice (single with washroom), she did still get a room with a washroom because that's what her accomodation was for. So, if yours was for a single room and your accomodation was approved, then you'll get that.
Although room assignments already came out so this may be moot at this point