A friend of mine has a similar setup with thermostatic radiator valves, sensors, and a few other Bosch devices connected to the SmartThings hub via the Matter bridge. The last time I checked - about two months ago - he was experiencing stability issues, but he’s using the beta firmware for the Bosch controller. Updates are being released quite frequently, and from what I’ve heard, the team is responsive to customer feedback. There’s also a Bosch forum available.