There are a few factors that make a good restaurant: the food, the atmosphere, and the service. Obviously it's nice to have all three, but I'm one of those people who will make atmosphere the dealbreaker. Specifically, it needs to be pretty chill and quiet. It needs to have low lighting. Meet those needs and the other two factors aren't totally lacking, and I'll probably come back.
The same holds true for a rehearsal space. If it doesn't look or feel comfortable, it can potentially detract from creativity and productivity.
I've been a bandleader and drummer in more studios and rehearsal rooms than I can count. Some have been so filthy I've been afraid to use the bathroom. Others have been so sterile or brightly lit that it's simply unpleasant to record there. Others are fine in terms of atmosphere, parking, and amenities, but there's way too much audio leakage from the band in the room next door.
One of the reasons it's been such a productive last few years for me has to do with the workspace I rent to record my drums and vocals in. I never, ever take it for granted. It's got all the things that are important to me, but most importantly it feels very private, and as a solo artist who's often producing, recording, and coaching myself, that's critical. The best part is that it's like five minutes from our house.
I realize that my creative output—anyone's really—has so much to do with creating the right environment and even circumstances. When you find the right space, everything falls into place.