Yes, they were and the lobby also had spare ones.
Not sure It certainly provides sockets that are compatible with UK and European plugs
You can call reception from your room or collect downstairs at reception
Yes, there are adapters available, but please read the other answers -- especially the one about the voltage issue.
Something you should consider before you plug your electronics in!
Electrical sockets (outlets) in the USA supply voltage is +/-120 volts AC at 60Htz however SA its +/- 220V at 50Htz .
You need to make sure that what you plug into the wall socket regardless of adapter is compatible with multiple voltages to insure that you keep to smoke inside the electronics.
If you see smoke coming out its to late, for you cannot put it back to make your equipment work again. Its all about keeping the smoke inside!
I hope this information was helpful.
Get an answer from 54 on Bath staff and past guests.