At first glance my wife and I thought it's a museum--nicely set garden and decorated building with lots of light. Then we understood it's owned by a company producing lights and the shareholders built it for their pleasure. So, it's kind of non-profit.
Really cosy and stylish, but without the fus. Same for the menu--nice dishes just between Bulgarian and European cuisine. There is a hotel upstairs--3 or 4 rooms, small but luxury spa and a secure parking.
We paid for a dinner for two and two bottles of good red wine (we`re wine-lovers) app. EUR 55 The mark-up of wines is actually very low, so you can taste otherwise expensive Bulgarian wines at a reasonable price.
The restaurant is ~50km from Sofia--nice mountain drive along three lakes.