Fine Gael says it's confident of finishing a government deal with Fianna Fáil over the weekend.
But as talks resumed at Trinity College, Fianna Fáil indicated its position on Irish Water would not be 'fundamentally' changed.
The talks have now left the main Trinity College campus - for another Trinity faculty on nearby Pearse Street.
That shift, however, is the only one either party is willing to confirm, as they remained tight-lipped about progress.
A large number of issues remain outstanding, say Fianna Fail - Michael McGrath says Irish Water just one of them.
"Agreement is not yet in place - in particular in the area of housing, [and] the provision of additional housing supports, through rent supplement; in the area of health, and the measures we have put forward to tackle hospital waiting lists, in relation to education, we have a number of items we want to have addressed, and similarly in relation to childcare."
On water, he added; "We as a party are trying to rebuild trust in politics, rebuild trust with the party. We're not in the business of saying one thing before the election, and doing something fundamentally different after the election."
Leo Varadkar, however, painted a more positive picture.
"I'm certainly more confident now than I would have been a few days ago that we can come to an agreement over the weekend. That's what we're working towards."
Fianna Fáil TDs are on standby for tomorrow to approve a deal, but at this stage it seems the talks will take the weekend to finish.