I stayed there 2 years ago - its a fair walk from the town (approx 20 min) normally walked down and got a taxi back.
Rooms are large but basic, food nothing special but has a decent bar in the foyer - prices of the drinks were reasonable then.
There is a pool and infra red sauna which you had to pay extra for
We had a good time there for what we paid
We stayed there last year, but would not go back. The rooms were to small and very hot even when you turned off the heating. Apparently it used to be a rest home.
The location was lovely but too far out of town. The pool was cold, the massages were really good and good value for money.
You get what you pay for if you spend a little more you can get a much better room in Pamporovo