Well I house sat for Shelly and looked after Marley (featured here) and the feedback that I received from the next door neighbour was that Marley was quieter with me there than with her owner! The first night was a barky night, to be expected as it is very confusing when your owners' car is in the driveway but someone else is sleeping over with you, but the subsequent 3 nights were peaceful and relaxed.
[Contact details are available upon request. Redacted here for privacy reasons.]