I'm happy with it.
I am not certain what all the negative reviews are for. It bubbled nicely and kept the water warm (I put hot water in it) It states on the machine that it won't warm the water, but I found it helps maintain the temp for a reasonable amount of time maybe 15 min. I bought it for my hubby. His feet are a hot mess and he needs something soothing.  Which this was for about 6 minutes.... it was not the machine, the hubby has jacked feet. The only complaint I have...not a variety of colors. I have  had to take an oath of silence with my husband regarding a pink foot spa.
Rating: 4 stars