I did a search for the specs on this TV, and since it's a PAL (European) model I can't say for certain if a Roku will work on it. It is a 1920x1080 display, but the specs are not specific about the resolutions supported on the HDMI connections. They are HDMI 1.3a, which is an older spec, but I thought that they should be backwards compatible with newer devices. I have seen sets from that era that do not support 1080p, instead only supporting 1080i and 540p on the HDMI ports. Roku devices do not support either of those resolutions.
That particular TV appears to be built specifically to support Freesat satellite services. Again, being a European model, it's tough to tell what sort of support it would have for modern HDMI devices. I see it was a pretty expensive model when it came out, but I would guess a modern 1080p TV would perform far better with today's hardware.