Thank you, Martin)
The room is clean and comfortable. The building is located on a one of silent streets, walking distance is about 10 minutes from the Old square. Windows are directed to beautiful old church.

Martin is very accurate in communication and he kindly accepted to invite me for only a one day stay (I know, it is inconvenient for hosts, especially on a weekend).

The only tiny concerns were: 1) old church clocks, which chime every 15 min and 2) Indian food café located beneath the windows. So, I had to close windows firmly at night. However, for me they are neglible.
And yep, I’ll recommend Martin to my friends.