Based on previous experience of driving a Honda Jazz, the Jazz seems to meet your profile required.
The Jazz spots a not overstated 'kawaii' jap car look that suits your age. It has a good fuel economy around 14-16km/l, has good ergonomics that most japanese cars are spotting right now.
The seats are very versatile and since the petrol tank has been brought forward from the rear, the floorboard in the rear is flat, giving the additional added space.
tax and insurence should be relatively low for a 1.4l car especially if you are starting out on getting a car.
Only thing about the Jazz i contend with is the firm ride which can be a little uncomfortable in the rear and the CVT which does take out the simple pleasures of pushing the car a little harder.

(Opt for the manual if you are keen, but note resale will only be for the manual enthusiast!!

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