Hi everyone!

Me and my partner just went sale agreed on a small studio apartment in Dublin, and I'm starting to think about how to best plan this (small!) space. The place is 32 square meters with a main room, kitchen, bathroom, and entryway.
I would like to install a lofted platform for the bed in the main room. I think it would help us preserve floor space for dining, working, etc. and the platform would allow for moving around/hanging out better than a smaller ready-made Ikea-style loft bed.
I am envisioning something like this, basically a giant metal "table" with some stairs/ladder:

Extra picture:

I have no idea where to start, or what kind of professional could help build and install this, though!
Could anyone please 1) tell me if this is a stupid idea, and 2) point me towards professionals who could build and install such a structure and ensure it's safe and solid?
Thanks very much in advance!