To get to this lounge, you need to go up a floor from the gates. It’s accessible via Priority Pass, which is how I entered. It’s worth noting that this is the only lounge in the non-Schengen area of the airport.
The lounge was a pleasant place to sit for a little bit. There were proper tables if you wanted a place to sit for eating or working, but unfortunately, there was no bathroom in the lounge.
In terms of food and drink, I think there was a marginally better food selection at breakfast than compared to the other lounges I visited at the Budapest airport. Or at least the food was vaguely healthier. For example, there was yogurt, muesli, and fruit on offer, instead of just pastries. But there was also the unhealthier desserts like turo rudi and sport bars if you wanted your fill.
Since this is the only lounge in the non-Schengen region, you don’t have much of a choice of whether you want to come here, but it’s solid for a Priority Pass lounge in Europe.