1.) No option for a dedicated water line. If you’re looking for a product that offers that feature, this isn’t the machine you want.
2.) No water filter. meaning you’ll have to periodically descale the machine, unless you use distilled water in the tank, or filter it from some other source.
3.) There’s an auto-fill feature that works when pulling shots, so that the boiler refills from the tank automatically. That’s handy, but there are two drawbacks. The first is the fact that it’s impossible to tell the tank’s water level without physically opening the top hatch and peeking in.
4.) the auto fill feature doesn’t work with the steam wand, so after steaming 2-3 drinks, you’ll want to manually flip the switch on the front panel to refill the boiler manually, which quickly becomes a nuisance.
If you can deal with the issues mentioned above then the machine will do the job for you and you'll get plenty of enjoyment out of it.