Here's a guide to work with,
Bedroom, €2000, to include carpet, double bed, blind, curtains. bedside table, lights etc. by 3 = €6000.
Kitchen, €8000, to include cupboards, kitchen table, chairs, Floor covering, lights. blind and curtain. other white goods.
Bathroom, €2000, to include fittings, shower unit etc. blind, floor. by 3= €6000
Sitting Room, €10000, to include suite, carpet, cabinets, coffee table, lights, blind, curtains, TV, etc.
You didn't mention dining room or conservatory?
If you allow another €5000 for workman to install the various pieces kitchen etc. you would be looking at a figure of €40000 which should cover everything including hall floor and lights.
On top of that you would need to include for paint/painter.
That would be my estimate. You could add or subtract from that depending on what you need.