The nicest helicopter I've ever had the pleasure to sit in and fly was the new AB139. Low floor, copilots side had a huge door and no gymnastics to get past the collective.
And hectares of glass in front as well.
The R-44 comes close as well. The cyclic arrangement is quite conducive to getting in and out easily . Witness the two chaps who ditched on in the South Atlantic several years ago - imagine doing that in a survival suit in any other helicopter....