Luce the little italian (greyhound)

.....this dog is a true "show pony". all the dogs - there are 3 - come to work. Only Luce tours the neighbourhood in daily search of the most recumbent spot, protected sun, donor of the nicest biccie and opportunity to garner maximum coo.
A rescue and a wreck at first. Abused and called "Butch" - Now, at 6 he is amazingly socialised and social Fantastic with children and nervous nellies. He needs his own PR agent.
Toilet habits are a bit woeful with winter months, rain and damp grass not to his liking. I have never been able to overcome his propensity of living room toilet. And boy, have i tried.
So any magic cure suggestions will be most welcome.
A true "Iggy" he loves the comforts of sleeping between the covers. Our fellow business neighbours have provided various comforts for his daily visits - a sofa with soft throw; the $5 dollar special basket moved to just the right sun spot by the door; fresh water bowls, and favourite blue mats...............
This boy has survived some harrowing illnesses and our wallets have barely survived the cure.
He is possibly fatally allergic to a particular flea and tick treatment His body went into terrible shock with temperatures over 42 degrees, neurological trauma, shivering, pain, inability to walk.
Survive he did, thanks to the wonderful medical care of a specialist vet clinic in Brisbane and here to give us daily joy.