I've got my eye on that chair too, but the grey version !! Swoon has a good reputation. A bedroom chair usually is often more of a decorative item than used daily to sit for long periods - so I'd say go for it !
£500 isn't cheap but it's not £££ either, so I feel like quality could go either way. It wouldn't be sat on much, as you say, Houzz, but I would want it to last and look good (neat edges on the upholstery, no rough bits on the legs etc) as the rest of the room is very good quality, bespoke furniture and fittings. I wouldn't want it ruined by an iffy chair, IYSWIM.