I'd avoid, unless it's a modern one with timers, which can be brought up to full heat quickly. Also, what will you do in summer?
We had an Aga for eight years -- it was in the house we rented and later somewhat grudgingly bought because the owners, adult siblings who'd inherited it from their parents, put it on the market and there was nothing else to rent locally.
I will be honest, it was a bit of a pain in the ass, and expensive to run. Ours was old fashioned, and, if turned off, went out, or even was turned down to a minimum, took hours to come back up to full heat to the point where you could use it to cook. We did learn the knack of baking in it, but the real issue was that either it was blasting heat, or it was unusable, and that turning it on and off took forever -- it was a choice between leaving it blasting heat all day while we were out at work and the house was empty, or turning it down for the day and arriving home at 5 or 6 o'clock knowing we couldn't start cooking dinner for an hour or more.
It was too hot in summer, so we turned it off and used a plug-in electrical hob and a barbecue to do most cooking them. (Our hot water was separate.)
I can see how it would work well for a chilly old farmhouse with people in and out needing meals and warmth during the day, and where it could be used for drying laundry etc, but it didn't earn its keep in a well-insulated 1970s house.