Plaster around interior windows that has come off?

[OscarD]

Hi!
I've bought an apartment that has been empty for a while where the plaster(?) around the windows inside has come loose. What is the best method to remove the old paint, and what material should I use to get a smooth surface before painting, or can I paint directly on the rough surface? Is it just the paint that's peeling? Should I scrape off with a morakniv and then sand down the rough surface and just paint, or do I need to apply some other material first? What paint do you recommend? Help a confused guy who's about to renovate his first apartment. See pictures below.

 

[topmount]

Looks like there are multiple layers of paint peeling off. Hopefully, the rest around it will come off easily too. Take a scraper and remove all the loose parts. It looks nice underneath, in my opinion. Try wiping the bottom layer with a cloth; it might be two incompatible paints causing the peeling.

 

[OscarD]

Looks like there are multiple layers of paint peeling off. Hopefully, the rest around it will come off easily too. Use a putty knife to scrape off everything loose. It looks nice underneath, I think. Try wiping the bottom layer with a cloth; it could be two incompatible paints that caused the peeling

Thanks for the answer! The surface underneath looks nice but is a bit uneven. Maybe it can be sanded down with 120 grit paper? Should one use a special paint or will ceiling/wall paint work? It almost looks like wood paint was used before.