Consider a set up for two.

I need a to scale floor plan of the whole space not just this little area Do the plan on graph paper show every window , doorwayswhere those lead every measurement clearly marked posted here in jpeg format in a comment DO NOT START another post since we cannot go find your other posts right now .As I see it 2 small chairs upholstered maybe arms if small enough scale and a small table and enjoy your morning coffee o a glass of wine with a friend while cooking . The heating is also an issue is it elctric or hot water? Hot water can allow you to put stuff close . The other option is the tiny round table mentioned and 2 chairs same purpose . I for sure do not think a built in table would be ideal Without the plan of the whole space it is hard to help

If a banquette won't fit nothing will. Anything else would require movement easements. What does it look to? I would go with a banquette seating and maybe a teeny tiny table--that makes it obvious it's barely a coffee perch but most of the time it's just a sunny place to sit for a moment. Otherwise make it a recycling/pet feeding arena and call it a day. A space too small for people is storage.

you can find drop leaf ....search around. or get a local craftsman to make a simple 28-30 in round table w great wood top.... more issue w chair option . find something w pedestal base as opposed to 4 legs so the chair stays put... / adjustable height and swivel.... go ahead spend the extra little bit to get the right scale and details. Id remove the light fixture and put a ceiling led fixture and probably go bar height w the table. paint the wall area...art on the right wall....some solar shades....fun spot. Good Luck.

chairs.....people slide in and out instead of 4 legged chairs moving around ..you dont have space for maneuvering but stationary style will work.

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A custom built window bench to accommodate the heat registers without a table would be lovely.

This is easier and still lovely with a cushion and pillows

You could place two upholstered chairs with a table between them. That would be very comfortable and wouldn't block the heating.

I would focus on the 2 ( or maybe even just 1, depending on who/ when uses the space ) most comfortable, compact chairs, and then the smallest drinks- only table. Even a side table, though if you definitely want chairs for 2, a center table serves both.

Swivel chairs can be good but less so in this space, plus locks in features you may not need, as armless upholstered chairs might fit better, or petite armchair ms, and the chairs since smallish would not be hard to move a bit.

How many is we? A couple would be two chairs and a table between. More people you might want more. Perhaps a murphy table along the long wall that can be down or up if needed to sit and face out the window- you might be able to do 3 stools, or maybe a tight 4. A custom bench can be nice too, but not necessarily as handy for eating or drinking at.

Absolutely agree that 2 comfortable easy chairs with a center table would be the perfect place to have coffee or share a glass of wine in the evening. I’d remove the chandelier and add a beautiful and cozy lamp on the center table. And a rug.

I'm also in the two comfy chairs and a center table camp. Will look great!

A banquette seating unit on legs.