The hotel was built in 1840, so it's full of character rather than looking and feeling like a clone of so many other modern hotels. We had two rooms opposite each other; both very large, and clearly modernised and updated very recently: for instance, the double socket next to my bed had USB charging points as well as the standard 13-amp plug sockets. The beds were either king- or queen-sized (I can never remember which is which) and very comfortable. Each room had two armchairs and an occasional table, plus a large desk, a cupboard with drawers, and a fridge (a proper fridge, not a mini-bar). The bathrooms were large and well appointed, and sparkling clean.
The breakfast (included in the price) was excellent; there was a choice, but we had the full English, all quite delicious, and cooked to order. The staff were friendly and very helpful.
There was only one drawback (explained on the website: the car park (which is free to hotel residents) is accessed through a narrow gateway, originally designed to accommodate horses and small carriages, but quite tricky for wide cars. Ours (a Vauxhall Mokka) was fine, but the car ahead of us, considerably wider, struggled, having to reverse out and try again. (It did succeed the second time!)
Overall, we hadn't expected much - it was only an overnight stay on the way to Pembroke Docks ferry to Ireland - but were agreeably surprised at the comfort and amenities of the Spilman Hotel.