I don't know if I'm reading this right, but if the area is shaded by the apartment block to the south, a rose isn't going to do well there. Also, here in Winnipeg I wouldn't plant any marginal perennial next to an area that will have snow cleared. I realize Calgary doesn't have the extreme cold and also doesn't have the reliable snow cover, but here if you plant next to a driveway, the frost will track through the ground making a surprising difference. I also wanted to mention that Polstjarnan has no fragrance and you wouldn't want to plant it anywhere you'd walk past. It will reach out and grab you like that thing in the lake on Lord of the Rings. It dragged me off my riding lawn mower twice last year. It hurt less if I didn't struggle.

Eden has stiff canes similar to William Baffin, the best I could do was train it at a 45 degree angle , I think it was too stiff to do anything else with. Darlows Enigma is a hardy shrub/climber for me, hardy to the tips. Starts blooming for me around this time with dark red new foliage. Repeat bloomer, sets hips for winter interest, very fragrant but probably the worst thorns ever. The blooms are single and white. Another very hardy climber for me is Seafoam, this rose will do whatever you want it too do. Starts blooming around now and goes well into the fall,no fragrance but that's OK because it has exceptionally healthy,dark foliage. The blooms are white, a little pink in thefall. I have another hardy rambler called Ghislaine de Feligonde. This reblooms for me, if I deadhead. Some people on the forum says theirs repeats and others say theirs doesn't. This thing is a MONSTER for me, and hardy to the tips even after this last winter. Blooms are yellowish to pink, very pretty. As far as structures go, they are always iffy for me. Eventually the older, thicker canes of the rose are what I tie the new shoots to. For additional color for my once bloomers I either plant clematis, liatris,daises or any tall perennial. Oh I also have Veilchenblau, it has always been hardy to the tips. Young canes are easy to train if you get there soon enough. Once bloomer, but when it blooms there are so many you can't even see the foliage. Orange hips in the fall, leaves turn a nice yellow than as well. Semi double blooms, every shade of purple, will get as large as you let it. It's practically thornless. Honestly winter protection is a gamble for me, some people bury the canes in the winter, I did this once and the rose got canker. It's just too much trouble. If I had a rose I loved with questionable hardiness, I would plant it close to the house where it would not be subject to northern winds.

Look for Jeanne Lajoie. She is very hardy here in zone 6 and a wonderful rose.

Nahema is NOT hardy in my zone 5 .. died after 2 winters as own-root from Roses Unlimited. I successfully rooted Nahema, but it died recently in my unheated garage with temp. at upper 20's. Annie L. McDowell survives 2 winters for me since I planted it right below the rain spout so it gets constant moisture. Winter here is -30 below zero with wind-chill factor, and Annie dies to the crown every year. For its 3rd winter, this year, I plan on watering Annie during the winter in case we don't get any snow. Zero winter-protection except for a thin layer of leaves, it's on a steep hill so I can't pile up winter-protection. I planted Annie in a deep hole with MG-potting soil and topped with dense clay to seal in the moisture. Let's see if Annie survives its 3rd winter.