Can you post the layout this designer came up with? It really depends on what the rest of the layout looks like to determine whether this is a "good" design/setup or not...

Even if you don't have your designer's plans (although that would be ideal), you could draw it from memory and while you're at it, label the dimensions of the space (widths/sizes of everything...walls, doors, & windows, and the distances between those windows, walls, doorways, etc.)

I don't like it.

And I say that because I cook with high heat. Having that so close to a wall makes me quizzy. And any splats mean u will have to constantly keep the wall cleaned. But if u have a cozy kitchen, your options maybe limited. Range in corner at 45 degree angle with counter on both side OK.

Corner as in L in the base cab;nets or as in wall as bobb said?

My stove before demo was in an alcove (rather, a cave) with a wall 4" off my left side, and an L corner 6" off my right. Though I designed it myself (15 years ago without the benefit of GW, just fanciful ideas of what I thought would be neat) I never ever liked it. I felt closed in, especially on the left, and had to open the stove to get the drawer on the right open. I lived with it, didn't think about it every time I used it (why be miserable?) but when given the opportunity, I gave myself plenty of space on either side of the range in the new space.

If there is any other way, I would avoid it.

Right side or left side? Are you right handed or left handed? You know all your long pan handles will have to point opposite that wall.

I used to have a range with a small base filler to the left and then, at right angles, a base blind cabinet. Is that what you mean? It wasn't difficult to work there because I had plenty of counter on both sides, but accessing the blind corner was a pain. Also, the oven door would conflict with doors on that perpendicular run of base cabinets.

How wide is the range? I have a 36" cooktop and because of the space, I have never needed the space to the left of the cooking surface. It has never been used for hot pots, prep, anything. So I could do happily without that space, given that I do have plenty of space on the right side and there is usually unused burners on the cooktop I can move pans to. If you are right handed and the limited space is on the right, I think it would be really akward. If it is to the left, you could probably do quite well without it. Can you post your plan?

My cooktop is 3" away from an inside corner in an L-shaped island, and I really like the placement.
If it were 3" from a wall -- never! But 3" from a corner -- has never been a problem, and I cook a lot.

FWIW, I am right handed, my open counter is to the right of the cooktop, and the less-accessible counter to the left is used for utensils, cooking oils, salt & pepper grinder, etc., with a 'dead corner' cabinet underneath. (Since I measured everything, I knew I had enough storage without using that corner, and choosing to leave it 'dead' gave me wonderfully-functional drawers below the cooktop and beside it for pots & pans.)

Your ability to live with it will depend somewhat on how you cook. My old kitchen had a 24" cooktop right up against the wall but it was livable. The wall was on the right and I am right handed but I usually used the right burners for boiling, not cooking and that helped. I also rarely used more than two burners at a time. If you end up going with this layout, you should spend some time in picking out a burner configuration that meets your cooking style and minimizes a wall conflict.