I suspect that there is some vertical blackspot resistance in Vanessa Bell, as it is spotless for many growers and quite susceptible for others, regardless of humidity and heat.

I may partially agree on the single flower not being breathtaking, the average deep cup, but the colour is really unique. White on the outside, yellow on the inside. The scent is quite strong, not especially refined, myrrh and citrus.

The main thing I have to say about Vanessa Bell is that I had never seen a second year own root plant having 120 flowers in its second flush without deadheading.

Its growth and foliage are quite interesting as well, very light and airy, but it needs to be staked after heavy rains

After 3 seasons, the height and width of this rose in August of the 3rd year is 4.5 feet x 4.5 feet.. with pruning back to 3 x 3 feet in winter, and light pruning after the first flush... [as grown in southern England]

The width shown as 30'' in the description I would say is for the first year only...