We need some info to better help you. How many sq feet is the space? Where is the current router? How many floors? Generally a mesh system will work for most people, but the biggest mistake people make is putting the 2nd router/AP in the space that gets the worst WiFi signal. This is pointless because the 2nd router/AP needs good WiFi signal from the main router for it to work. So you need to put it somewhere in the middle of the main router and the room with crap WiFi signal.
We need some info to better help you. How many sq feet is the space? Where is the current router? How many floors? Generally a mesh system will work for most people, but the biggest mistake people make is putting the 2nd router/AP in the space that gets the worst WiFi signal. This is pointless because the 2nd router/AP needs good WiFi signal from the main router for it to work. So you need to put it somewhere in the middle of the main router and the room with crap WiFi signal.