Bamboo, which is safer to grow in the garden, is known as "clump-forming" as opposed to "running" bamboo, which, as its name suggests, produces long underground rhizomes from which they spread rapidly. The Bamboo illustrated making a shady seat is Fargesia, and I planted it in this spot about 10 years ago. It is clear from the image is that it is of a manageable size and well contained.
Bamboo recommendations :
Fargesia of which there are several popular varieties commonly offered for sale.
Shibataea is a short form of bamboo.
Bambusa is a medium to a large clump-forming variety of Bamboo.
Where more space permits, Himalayacalamus hookerianus is known as the Blue Bamboo for its lovely blue canes, it will grow large but is not invasive.
Shibataea kumasaca reaches up to around 1.5 meters remaining, in Bamboo terms, compact.
Crocus has a good number of non invasive bamboos to buy ( affiliate link)
If you are considering planting near a pond, which is a popular choice, just think about the pond liner and ensure the bamboo is not too close. It is probably considerate not to plant near a boundary so that it will not spill over to your neighbour's garden or into the wild. Remember all bamboos are vigorous and so not safe to plant near foundations, structures, boundaries, ponds and if you are not sure, go for a safer choice, say grasses.