Well, the cake eating begins. If he's divorcing you, the only reason he wants to come there is to have a place to stay w/the girls. Your home is not a hotel.
Before I would respond to that request, I would speak to my lawyer and see what is he would advise. I, personally, would sit on that request for a couple of days and if he asks again, I would be very nice and state that it is not adviseable to do so, as this will confuse the girls into thinking that we are reconciling at this time. I think it would be better if you made arrangements to see the girls elsewhere. If he's got money to burn on the ow, etc., he can find a nice hotel to stay at for the night.
This man would expect you to fix up a room for him and he most definitely would have dinner there and play the disney dad to the end and then go away and then the next time you crossed him, he would treat you like dirt once again. Have you forgotten already forgotten the nasty things he said to you and about you?
My answer would be no...he's a grown man and he needs to work this visitation issue out on his own. Do not allow this many to walk all over you and yes, you would feel bad. You will never heal if this starts up. Yes, if you allow this to happen, he will continue to use you and your kindness up and then spit you out when you are of no use to him any longer.
Set your boundaries and stick to them. You don't want to give your girls false hopes about a reconcilation...your daughters are already having a tough time of it and this will only make matters worse for them.
Don't respond right away...leave it for a couple of days. He really is trying to manipulate you into doing things HIS WAY and he doesn't give a crap about you or how you feel. Sweetbriar, it's time to take back your respect and set those boundaries. He's working you like a musician plays the violin!
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.