Oh man Frank, Harmonia Mundi is SUCH a great label! Repertoire right up my alley, performed so well and in those ancient rooms, and in great recorded sound. You’re right, you can really hear the room the recording was made in, something I absolutely love. To hear those "period" instruments (both antiques and modern reproductions) in those rooms, the type the music was written to be heard in, performed in period "correct" style (without the Romantic era vibrato that was not employed in the Baroque era), really adds to the full appreciation of the music and it’s performance. What more could one ask for!
In the 90’s the U.S. headquarters of HM in Westwood/West L.A. had parking lot sales every few months, offering discontinued LP’s and CD’s for $5 apiece. I was there every time. The cream of my music library!