From the picture it looks like a Classic design, this would be an easier boat to get in and out of from the stern, than a sundeck.
I will remind you that a boat is a series of compromises, give here, take there. IF you are going to spend a lot of time diving
and using the boat for that then of course you want good access.
We have a Albin 43' Sundeck which because of where we keep the dingy, on the swim platform blocking the ladder, we get on the boat while swimming using a ladder on the port side deck
entry (we also use this ladder while in our slip with a fixed dock).
IF you want to consider your wifes comfort (your FIRST point) then this boat would meet those needs (there is a lot of living space and good size master stateroom) and you'd make modifications to meet other needs.
Keep looking, it's part of the fun, and you'll find your boat.