I wouldn't say they are low maintenance.
We have a similar (french) scent hound, possibly a bit more worky as they're a little closer to working lines than show Beagles would be...
He's lovely, adorable, stinky hound and dribbly but thats the longer fur and flappy chops he has that a Beagle won't have.
Plus sides are, Beagles tend to be universally people and other dog friendly and if introduced properly when young, easily 'other animal' friendly.
They are also very easy to train as they are super food motivated, and its very easy to entertain them by scattering treats, hiding food stuffed toys, etc.
BUT the downsides are .. off lead, it is true that the nose goes down and the ears become purely decorative. It is rarely that they hear you and CHOOSE not to return, it is more like they haven't heard you, and are wholly unaware that you are not right behind them. It genuinely comes as a surprise when they lose a trail and the head goes up and they look round and you aren't there!
It takes some management and common sense, lots of work teaching a recall just in case, but not relying on that recall as a matter of course. The long line and harness combination come in very handy and again thats something that takes a bit of time to learn, and practice to be really skilled at handling 30ft of line (don't use flexi leads, they have a lot of downsides and can be quite dangerous).
People DO get Beagles as domestic pets, they aren't the most common but I'd say more common than:
Petit Basset Griffon Vendeen
Grand Basset Griffon Vendeen
Basset Fauve de Bretagne
All of which are v similar and have a fairly strong show/pet following in the UK now.
Another super fun thing to do with any dog but really great for the scent hounds is Man Trailing - its on a long line, its a single dog sport so your dog doesnt have to be ace with other dogs... following a human scent to find a hidden 'misper'. Easy to learn, really great for the dog, lots of fun for people too.
I'd have one if I didnt adore shaggy haired breeds!