The description page says this is "a Hybrid Gigantea" but I can't see anything in the references here to support that. Is there some other reference to Gigantea blood not included? I can see similarities with 'Hadley' and 'Princeps' in 'Editor Stewart', so I'm wondering is it's one of Clark's favoured seed parents pollinated with 'Princeps'.
The fact that it was recommended as a hedge suggests it must have had a degree of retention of its foliage in winter. So perhaps there is Gigantea in it after all.
Also, to anyone who has experience of 'Editor Stewart', does it produce hips?

Rose Listing Omission

Myveta

From actual label:
Rosa (TH) 'Myveta Rose'
Grootbloemige roos, Rosier Buisson à Grande Fleur, Edelbuschrose, Hybrid Tea Rose
Place in full sun to half-shade
Height 60-80 cm
Flowering time VI-X (May to October)
Pruning III/10 cm

From Kleine Plak (nursery by Albert Ramakers) - Biologische tuin-rozen:
Myveta
Grootbloemig
Geel met roze randen
60-80 cm
Bloeitijd VI-X

https://kleineplak.weebly.com/?fbclid=PAQ0xDSwKZIqBleHRuA2FlbQIxMQABpyX7s_ysaL_qRuRLnvCllVTb5QmsmjZVobIluospt0yYSMsIbDcvWyheanBh_aem_jgp-wVuac6AK-kXuKH8EkA

Erik Coenders Kwekerijen is distributing Myveta as Grootbloemig as well.
https://erikcoenderskwekerijen.nl/foto-assortiment/grootbloemig

There seems to be some confusion among retailers about what rose type Myveta is, who, more often than not, is selling Myveta as a floribunda instead of a Hybrid Tea, grandiflora.

Bakker.com writes:
"Large-flowered rose Rosa 'Myveta'® Pink-Orange - Bare rooted - Hardy plant
Large, full flowers
The rose 'Myveta' (Rosa Floribunda) has large, full flowers. This rose is known for its flowers that bloom for months. It really stands out in your garden thanks to the beautiful colour of the roses and the size of the flowers. [...]
Extra: Our large-flowering roses are commonly known as hybrid-tea roses with large, lightly fragrant flowers. The double flowers are in beautiful shades. These rose bushes are very strong and healthy and flower in abundance."
So, though they contradict themselves a bit, they are at least descriptive.
https://en-gb.bakker.com/products/large-flowered-rose-rosa-myveta-pink-orange-bare-rooted-hardy-plant

Blomsterlandet.se, another retailer of Myveta:
"Rosor > Klaseblommande rosor > Floribundaros 'Myveta', Rosa (Floribunda-Gruppen)
Rabattros som blommar under lång tid med stora, fyllda rosa blommor
Rabattros med upprätt växtsätt. Bladverket är grönt och svagt glänsande. Blommar med stora, fyllda rosa blommor. Kontinuerlig blomning från slutet av juni till tidig höst. Blir fin i grupper, i buskage eller som solitär. Fin som snittblomma.
Skötselråd
Läge:
Sol till halvskugga
Odlingszon: 1 - 3"
https://www.blomsterlandet.se/tips-rad/vaxtinformation/utomhus/rosor/klaseblommande-rosor/floribundaros-myveta/
They state that Myveta will thrive in the Swedish hardiness zones 1-3 (note that this is not USDA). They describe big full blooms, upright growth and green, slightly glossy leaves. Myveta blooms continuously and Blomsterlandet.se recommend planting it in groups or as hedge, bur says it is beautiful as a solitary plant as well.

piontorpet.se describes Myveta's colour coral-pink and fragrance as a "true rose scent, like how you'd expect a rose to smell":
"Sommarlivet och sommarlovet avrundas med en blommande rodnande solnedgång. Som en vacker augustikväll, skimrar den vackra rosen 'Myveta' i rosa-korall toner. Galet vacker och doftar sådär ROS som rosor förväntas dofta, men inte alltid gör."
https://www.instagram.com/share/p/BAdWnphak5

DirectPlants points out that Myveta is suited for planting in pots and describes the spread/width of the plant to be approximately 80 cm.
"Myveta floribunda rose bush
Beautiful and very large pink blooms make this rose a natural centrepiece and perfect for growing in a pot. It will flower throughout summer and will do well in either full sun or semi-shade. Very bushy with a spread of around 80cm this is a really attractive rose."
https://directplants.co.uk/blog/best-roses-to-grow-in-a-pot/

TheJoyOfPlants.co.uk blog post/article mentioning how they've used Myveta in a rose wall setting:
"ROSE WALL
Need more greenery and a touch of romance, and have an old wall suitable for placing a green climber against? Then a rose wall is the perfect way to green up your garden, balcony or patio. Added bonus: the velvety rose petals bring colour and fragrance to your garden! In our example, we used climbing roses like the Paul's Scarlet Climber (red) and Myveta (pink)."
https://www.thejoyofplants.co.uk/how-add-green-unexpected-places
TheJoyOfPlants.co.uk is an initiative from the Flowercouncil of Holland.

Myveta has been seen to be mistaken for Chicago Peace, possibly due to the colours and shape of the bloom. To the best of my knowledge Chicago Peace and Myveta are not a match, though.

My own observations:
Has thorns, enough that you'll get scratched when handling, but not completely covered in spears. "Baby-thorns" or prickles are pink, soft, slender and slightly downward curving. Old/grown thorns are greyish beige long, thin, hard and slightly downward curving at the very tip.
Leaves consist of 5 leaflets, fresh to dark green, serrate and often with a cobbery edge on young leaves.
Buds are typically a solid coral pink to hot pink colour. As the blooms open they reveal a more peach/apricot/orange or sometimes yellow centre/petal base.
Stems likes to "stretch" and supports themselves quite well when reaching horizontally. I suspect it could be trained as a low climber.

I hope at least some of this can be of use.

this is its first year so I will edit my experience as I go but so far its been great. The plant held up to spring cold snaps with ease and was the first to bloom. When it did it was a massive rich perfectly formed red with a light tea scent. The leaves are lovely and are a great value of green to competent the huge dee red flowers. The only issue I have found so far is the flowers collect rain then bend over completely and don't bounce back up. May just be a first year establishing thing so I cant judge to hard. It's quick to repeat so far and none of the flowers have been misshapen. Glad my dad jokingly convinced me to pick it up because "You can always use a red rose" this spring when I was starring at it for 10 mins and thinking.

In Australia this rose is being sold by Knight's Roses as 'Coutney's Rose'.

From their website:
Colour Yellow with a pink blush
Approx. Height 1.8cm
Fragrance Not Fragrant
Breeder Kordes
Rose Code KORwintori

"The Courtney’s Rose showcases deep cup blooms with a quartered rosette shape, striking pink sheen blooms that begin as high-pointed yellow buds. Buds then open to reveal numerous inner petals and a flower shape reminiscent of roses from yesteryear, perfect for vase display and floral arrangements. The bush features healthy, glossy, green foliage and almost thornless stems. The mature plant stands upright, reaching a height of 1.5 meters, making it ideal for mixed rose beds, fence screening, or as a focal point when planted in groups of three."