The good points:
Breakfast ok: cereals, milk, orange juice, tea/ coffee, cooked Irish breakfast. I would have enjoyed fruits and wholemeal bread though, but it was nice.
Very nice couple, unfortunately, kindness isn't enough. Very too noisy and uncomfortable. Terrible bed - the worst I have ever slept in. You can hear everything from other rooms, and outside (near a hospital: sirens every night). Needs repainting. It wasn't hotel quality and I am used to stay cheap ones. I am very sorry for them as they are really nice, but unfortunately, I was extremely disppointed.
I highly recommend the Giant's Causeway Tour, the price is more than ok and it's definitely worth it!
Saint George Market is to be done, it's not too big and there are plenty of international foods, cooked in front of you, for such a cheap price!
The Titanic exeprience is quite good as well, the tour lasts for about 2 hours.
The city hall is so beautiful, you can enjoy a free guided tour, during which your learn quite a lot about the city of Belfast. The lights at night are amazing!
