Very discrete. They look different than expected but actually can be hidden very well. I’m using it around the conservatory as it has no lighting whatsoever and just needed it to creating a little ambience 
The only negative aspect I can think of is when you switch them off and then turn it back on it doesn’t keep the last setting. I wish they could just stay on rather than flashing. Because I bought more than one, I have to turn and set every single one every time.