I'm currently studying chemical engineering at swansea so I can't comment on the comp sci course but I can tell you about the state of the facilities at the uni.
Assuming you will be based at Singleton campus, the computing facilities are limited with most being located in the library. '
decade old computers in dark caves' is a very apt decription. Most of the computers are old, dirty and slow, with the majority still running windows 7. The silent computer areas are full of people eating and talking loudly despite this being against the rules it is never enforced. The whole library and also the campus in general has a very run-down dilapidated look and feel to it.
Also, good luck if you are studying into the evening and need to use the toilets as they are completely filthy. People urinate all over the seat and the floor, leave toilet paper everywhere and don't bother to flush. I was at Singleton last year and I would actually walk home to used my own toilet rather than go at the uni thay are that bad.