I have an engine with unlimited $\Delta v$. Don't ask how I got it, it's probably one of my earth changing inventions.
Either way: I no longer like Earth and want to get off (I'm headed for a retirement villa on Olympus Mons), but I don't want to lose the nice home comforts, like a sink with a plug hole, or being able to drink from mugs.
So I need to accelerate constantly in order to maintain the illusion of gravity.
You can call me picky if you like, but I don't want all the hassle of strapping things down at the mid way point when the direction of my burn changes and I experience a brief moment of 0g. I just want down to stay down. I know that a flip'n'burn is the fastest route, and that a Hohmann transfer is the most efficient, but frankly I don't care.
So my question is this:
Does a transfer between Earth and Mars exist such that a spacecraft can maintain a relatively constant 'down' from takeoff to landing?
I don't mind variances in the magnitude of the 'gravity' (let's say 0.5g to 1.1 g is acceptable) or the pitch/yaw of the 'gravity' (I've got wide based mugs, 15 degree pitch is fine). I also have a huge stock of tea bags and cuppa soup, so transfer time isn't an issue.
bonus points for proof/disproof that arbitrary transfers of this nature are possible