This house in renovation progress. I have plans of the architect to remove the wall between kitchen and living room. So that it becomes an open kitchen. I have here a two persons bathtub with whirlpool function.
The company that should have done the renovation have bought a lot of materials like new doors, gyproc, rockwool, to isolate the walls those need to be isolated and the new windows.
Plumbing and electricity still needs to be done.
My neighbours who are English bought their house which is 20 m² smaller for 120.000€ 15 years ago which they had to do their renovation themselves. Since then the prices have gone up. When you would reform it in luxury condition it would be worth 180.000€ or rent it out.
I would have placed a Jacuzzi on the roof terrace and would have placed windows as walls with the possibility to slide them open, same as the roof in glass to be able to slide them open and then you are able to make it possible to shut it off from views when you want to make it private on the roof terrace.
Cost to complete the renovation would be around 20.000€(this price depends how luxury you want to make it as a Jacuzzi(6.000€)) with the household effects included as kitchen and so on. The prices of work in Spain are very cheap compared to other European countries.