8/10
I used The Dolphin Tavern for 1 night with my wife. The location is walking distance from Penzance Station(about 10 minutes.) However, my Google Maps App had problem with the location so it took more than that.
The room was great. It might be inconvenient for some people as it does not have any elevators but it seems like only 2 floor building. So, unless you have a large luggage, it won't be a problem.
However, due to the Tavern's history the water facility was quite noisy. When I flushed the toilet or took a shower, big sounds came out. When I was very quite, I could here it from other rooms.
Except for that, the Tavern was great. The food was so delicious in the morning and in the afternoon. Everyone was very kind and helpful. I personally recommend this Tavern.