Hi there! It's over-complex idea guy back with another suggestion!
The original condo fits the bill for your super modern beach house, The Suite scratches your rooftop condo itch, and the Penthouse makes you feel like a city-side highroller. But what is missing is something more... traditional... More classic. Enter the Villa condo. This beautiful homestead would be modeled after a classic Italian styled Villa (maybe with renovations, for a bit of new meshed in with the old). Trading the concrete, metal, and glass for brick, cobblestone, terracotta tiles and wood!
I'm not architect or level designer, and these lovely retreats take many a shape and size, so below this is just my idea to be taken, improved on, on disregarded entirely!
First, location. I see this being nestled on-top of a cliff hill, overlooking a very small town, maybe on the Italian coast. A few streets of colorful buildings cascading down the hill towards the water with a small harbor and beach.
Something like this
But with some edits including replacing the top of the town with the new living space, and softening up the harbor/adding beach and whatnot.
Add in a soundscape of the ocean sweeping in mixed with the quite sounds of townlife reaching the top of the hill, and you have a beautiful setting!
Next up is the most important part! The actual playable space (No, I don't imagine the above described space would be playable, that's a lot of extra work, and would make the map YUUUUUGE)! Sadly this is also the hardest part for me, as I am unable to visit such a location my self, nor find good pictures online.
I roughly imagine a U or C shaped complex. A grand entrance area made of marble, with staircases on each side that meet at the back (Think of the Villa Auditore from ACII). Upstairs would have a master bedroom on one side, with a balcony looking over the courtyard and out to the ocean. On the other side of the top floor would be a spare room to be used as an office or whatever. On the first floor would be a large open room to be used as a living room (or anything you like) and a kitchen and dining room on the other side (maybe separated?) All the side rooms would be of plaster, wood, and some wood flooring
Heading back you'd have two opposing single floor sections of the building, settled on the long sides of the rectangular courtyard. One side could be a giant open space, to be used as an entertaining area/bro-cave/etc. The other section I imagine to have a hall spanning the length, with a door leading to the living room and one end and a door to the outside at the other. There would also be 2 doors near the middle, leading to two separate rooms, to be used as guest rooms/offices/collections/w.e.
The facade surrounding the courtyard would be of arches, windows, and plaster. The courtyard itself would be cobblestone or brick. This courtyard could either house a pool, fountain, or nothing (to be filled by the player).
That's just off the top of my head. But these lovely homesteads come in many shapes and sizes, so here are a few pictures from google. Of course I'm not the best researcher so I'm sure others can find better ones (and I encourage you to post them!!!
This is a floorplan I also found on google. Just for inspiration.
Here is something close to what I was describing
Something different entirely
A villa nestled in the mountains
Now again I don't live somewhere where I can go an visit an authentic Italian style villa, I can only base it off movies, games, and the internet. If this idea is liked, I encourage you to try and create a more authentic villa than I can describe to make a fun and interesting new condo design. The idea itself is the most important idea I am trying to convey.
Anyways, thanks for your time, Buonanotte!
TLDR/Pure Concept version; Old Italian villa sitting atop a very small Cliffside Harbor town on the Italian coast.