Is there a standard condo layout that yiur architrct is modifying? if so, could yiu please post the original?

Sure, here is the original. Arguably the bath is not "in" the kitchen in the original because we extended the kitchen by removing the walk-through. In doing this, I was trying to create more counterspace and orient my kitchen activities so that most of my activity would be facing the dining/living area and large windows, rather than the left-most wall. I'm open to other ideas!

There's really no other feasible location, but I would do everything possible to get the powder room door next to that exterior door so that it doesn't open directly into the kitchen.

Could you fit it under the stairs? Opened from foyer. It would provide the most privacy and also expand the kitchen.

Another vote for under the stairs. That's the most logical location. I'd recommend a self-closing pocket door also. As a major bonus you'll gain valuable kitchen space. This could give you a better functioning kitchen design.

I played around with the idea of creating a more private entrance on the far left wall, tucking the powder room behind the kitchen. Also, I think it's important to have a wall behind the cooktop rather than counter seating.

Using U.S. guidelines, you don't really have enough width to have counter seating lining the walkway to the PR in this layout:

But you could have comfortable spacing in this layout:

I think others have addressed the Powder Room issue.

For the Kitchen -- there are quite a few issues.

First, get the range/cooktop off the peninsula. It's in probably the worst location it could be in! It should be in the most protected, not least protected area of the Kitchen. It also needs more space on the non-sink side -- it should have at least 24" (~61 cm) b/w the range/cooktop and edge of the counter. Between the sink and range, 36" (~91.5 cm) is the bare minimum, with 42" (~106.5 cm) or more much better. A peninsula (or island) location also means more powerful, larger, and more expensive venting. It also puts the rangehood in the middle of the room. (Please don't say you're planning a downdraft -- they're arguably the worst type of venting you can have.)

The refrigerator is also located in a poor location. It should be on the periphery of the Kitchen and not draw traffic into the main working area of the Kitchen.

Where does that doorway in the tope left lead? I thought at first it was a back door, but it's on the front of the home. Is it another door in the front? Regardless, having a door opening directly into main part of the Kitchen is far from ideal. Depending on what it is, there is a potential for directing a lot of traffic into the Kitchen, forcing those prepping, cooking, and/or cleaning up to dodge traffic.

I'm not sure if you have enough space b/w the table and peninsula seating. With seats back-to-back, you should have 60" (~152.5 cm) or so b/w the table and the peninsula. We have 48" (~122 cm) and it's far too narrow an aisle when there are people seated in both locations -- and most likely that will happen (even if you plan to have seating in one location at a time...plans like that usually don't pan out!)

Sheloveslayouts has some ideas that I recommend you think about.

If you can put the Powder Room under the stairs, you have even more (and better) options!

Unfortunately @frisky @dan1888 the stairs go both up and down, so putting the powder room under the stairs isn’t an option. 🙁

A galley kitchen with the architects original placement seems best to me - sink in peninsula and range along exterior wall:

You could extend the cabinetry along the left exterior wall for even more counter space and storage.

And the refrigerator could be located on the left wall at the break between kitchen and dining so it’s more accessible to everyone.

Thanks @Buehl for the very valuable and useful advice re: the kitchen, particularly re: range, refrigerator, and sink placement, as well as the space requirements between a table and bar. At the top left is actually a very long window that can be opened like a doorway - but it's not intended to be used that way. Both it and the main entryway are actually at the back of the house, which is built on a slope and has three levels. This main level is the middle one.

Thanks @sheloveslayouts for the interesting kitchen floor plan options! These would indeed create more separation between the kitchen and the powder room - as well as the living area. Lots of food for thought...

That's an interesting suggestion, @thinkdesignlive. I've instinctively avoided the idea of a galley kitchen because that's what we have now (albeit on a much smaller scale). But perhaps I should reconsider, as it does have the advantage of (technically, at least) taking the bathroom out of the kitchen and making it more accessible than it would be tucked in the back of the kitchen.

I don’t see a better location for the powder room on the plan unless you can fit it under the high section of the stairway, which would place it next to the front door. My suggestion is to make it as inoffensive as possible if it must stay where it is. A solid-core door and walls insulated to block sound transmission would be a good idea. An exhaust fan would help control smells.

hm

Where are you planning to mount a TV? I don't see a wall that can support it in either plan.

Although neither is ideal, I'd rather have the powder room off the living room than the kitchen. I'm not entirely sure about the measurements, but I think what I've shown for the powder room would be approximate 5 feet by 4.5 feet (137 cm x 152 cm). By reorienting the layout of the living room furniture as shown below you create a hallway so it doesn't feel too much like the powder room is in the living room.

@BeverlyFLADeziner We haven't quite figured out our furniture for the living room yet. We're thinking about putting one of those cabinets that hides your TV and then lifts it up while in use in the bottom right corner. Any other ideas would be very welcome!

A cabinet in front of sliding doors? At the very least you'll have to make sure you have electricity in the area.

Even looking at the original plan the space was never set up for viewing TV.

Thanks for the great ideas, @BeverlyFLADeziner!