I recommend Tamara’s place. The top floor is spacious and clean and the neighborhood is good and safe. There is a bier shop at walking distance (7’) if you really want to buy trappist biers.
The flat is 25’ walking distance from the historical center, but managable. The flat has a ensuit shower, and the toilet (share) is on the first floor. The whole house is well maintained and clean, and Tamara and Ana are good hosts.