Done by the previous owner, a propane stove/oven was installed, and hose run back to the aft locker (fuel locker on the drawings) I installed 2 10 lb tanks in that locker, along with regulator/solenoid valve. After the regulator/valve failing 3 times in 3 years I built a waterproof box for them, and that box is now in the locker.
The hardest part of all that must have been running the hose. I don't know how they managed to fish the hose behind the galley cabinets. It is well secured along the port side back to the locker, and there is a gas-tight fit as it goes through the bulkhead into the aft locker, accomplished with expanding foam. Installing the stove itself seems to be fairly straightforward, but it was already done.
Wherever you choose to mount/store the tanks, there *must* be a vent at the bottom to vent overboard, which makes the aft locker the natural choice, but I think others have built lockers elsewhere and plumbed in a vent. All fittings/regulators/valves must be inside the locker, with a single unbroken run of hose to the stove. A pressure gauge needs to be installed as a way to check for leaks. A solenoid valve needs to be installed so you can remotely turn the tank on and off. Recommended is a gas sniffer that will turn off the tank if propane is detected in the cabin.
It needs to be done correctly, and if unsure get a professional to do it. I was recently sent an article by my mom (who worries too much) of a boat in SF that blew up and sank from a propane leak.
Many people prefer alcohol stoves, and there is a used market from them. So that is an option if you like it and don't want the difficulty of the conversion.