Shower room basin possibilities

[HouseNumpty]

Replacing a basin that was put in as a rush job but space is very limited. Needs to be as big a bowl as possible as it's the only bathroom so more than just a cloakroom hand-rinse (toilet is in a separate room), and as 'splashproof' as possible as it's a rental.
Options:
* same location, wider rectangular basin with right-end tap (hard to find anything which makes use of the width available without being too deep)
* corner unit (not sure if an oval bowl will end up smaller than the above option)
* rectangular basin under window (biggest space but awkward standing by the door/have to shut the door to use it, and much harder to reach the window to open it)

Attached pictures of the space and existing plumbing (the boxed-in pipes run to the shower on the right). Minimal disruption desired! Current basin is 400x330 max.

Thanks for any thoughts.

 

[jj4091]

Most people would want a mirror over the washbasin which rules out under the window. You will need to give available dimensions to get meaningful advice

 

[HouseNumpty]

There is a mirror immediately to the left. I expected people to value a larger basin over ideal mirror placement but maybe I'm wrong. The under-window option is my least favourite anyway though.

I wasn't looking for advice on what will fit in the space, just whether those 3 options are even feasible with the current plumbing and, any general views on positioning.

 

[freddiemercurystwin]

I would fit a pedestol basin, that avoids the inevitable damp cabinet issues. As above post a sketch of the plan of the room with dimensions.