Hey everyone!

I’m currently working on a small but exciting project, transforming part of a house into a fully functional mini apartment (Approx 25sqm). Here’s the situation:
The space is on the ground floor, with the main entrance in the lower-left corner, opening into a corridor. On the right side of the corridor, there’s a wall that separates it from two existing rooms, a bedroom and a bathroom.

The goal is to reorganize everything so that we have:
1) a day area (cooking, dining, living), and
2) a night area (rest and sleep).

To keep the project as affordable and simple as possible, I’d like to leave the bathroom as it is, no major changes there. That’s why I’m considering placing the kitchen along the corridor.

However, here’s the challenge:
The water pipes (blue for hot/cold, orange for waste) run through the walls you can see in the plan. To install a kitchen sink, we’d need to break into those walls to connect to the existing plumbing.

The space also includes:

a) 1 air conditioner (heating & cooling)
b) 3 radiators (one located behind the toilet in the bathroom).

I’d love to hear your best ideas and creative suggestions for how to make this work
a) keeping costs low,
b) minimizing structural changes, and
c) creating a smart, comfortable living space.