Florida Mediterranean homes have horrible acoustics. I'd have to address that. Also nobody uses insulated garage doors. Why??
Then I see a bunch of garage doors open all day because that is the only way the owner can access the garage. No walk in door.. Why ?
In this Seagate home the structure is top notch. But turn on the washer or dryer and the house is super loud.
Don't even turn on the dishwasher.
Open plans thrill buyers but there are negatives too.
I noticed the hot water heater is 75 ft away for the master bath...the transit time is crazy...lol
One plus for the two story home..
Open floor plan homes will always have some strange acoustics, the best way to change that is the wall texture. There used to be a lot of "popcorn" ceilings down here for just that reason. Almost everyone has removed them now.
They don't really make a garage door to deal with high outside heat. Most people keep the garage door open to deal with that. I insulated my own, but would do it a bit differently next time. Don't forget, near the coast they also need to meet hurricane specs. so there's that.
As to the side door, it depends on a lot of things, three of my neighbors have walk in doors to their garage, I don't. That's fine with me, if I go to the garage, the car or bike is usually going out anyway. It also serves as the Redneck Porch Enclosure! Get some sun while protected from the wind. It's a FL thing!
You need better appliances. I can't even hear my dishwasher running, standing right next to it!
Make sure you get a laundry room, we just close the door if it gets too loud.
As to the water situation. I'll agree, there is not of economy when long runs of piping are installed under a slab. My neighbor had all her piping moved into the attic. INSTANT hot water everywhere! So the answer is, Hot water pies up in the attic, cold water under the slab, but the builders haven't figured that out yet! I guess the get a kickback from the people that make instant, point of use, electric water heaters!!!