The mystery room still has not been shown, maybe it is a single room for the winner of tomorrows task and then they have to pick the two people up for nomination.

Just an idea as this was done yesterday in the first week of BB3 in USA. Could be fun to watch make for a tense week and the person who won the task would then be through to the final week and so no one could get there own back

Most people (inc some HMs) seem to think it will be a kind of love den (much like they had last year). However I think if it is that bringing it out now would be pointless as there are no couples - surely BB would have used it in the early stages when Spencer/Kate and PJ/Jade were still together.

Could easily be used in that task tomorrow but have we ever had proof that there is a secret room? It could just be somewhere the producers use e.g for storage or something.

Spanky

There is a secret room, I had it confirmed to me early on in the series by someone working for BB. No idea what it is though, the main suggestions are either a second bathroom or a sauna.

One suggestion is that the room is an indoor shower/bathroom for the poor side in case of horrendous weather in which case BB would have to oblige to Health & Safety Regulations by providing suitable inddor facilities.

Sounds plausible - I always did think the outdoor shower was really harsh. In which case however there would be no need for the room to be unveiled since the divide is down. Hope it wasnt that - am quite looking forward to some kind of secret room being unveiled.

Considering that on the glass map its marked as "BATH", I think its nearly certainly a second bathroom for the poor side.