I think you have to remember what you are getting and set your expectations accordingly. We considered this a "starter" hot tub when we purchased it - wanting to see if it was something we really enjoyed and would use before investing down the road in the more luxurious (and expensive!) models. 

So for us, this hot tub has been great. We've had no issues whatsoever since purchasing it back in September.  I don't think you would really want 5 grown adults in it because that is a little cramped but 4 is fine. Because this is a plug and play, the motor for heating isn't able to maintain 103-104 once the top comes off, it does cool down to 100 after about 45 minutes of use but that's about the time we are getting out anyway and its gradual.  

We've been very happy with this hot tub and Wayfair delivery service was awesome. Plus this sucker is super light so if you move or want to change its location, it would be pretty easy!