I like the cinematography (and filming locations), cast, and the storylines are mostly entertaining. (Some episodes feel like 'filler' episodes, but that's to be expected with shows that air so frequently.) I think the format & structure of the show really works, and continues to be entertaining over the years.
In particular - I find that a lot of the conversations are relatable and are reminiscent of conversations I've had with friends, and situations that have occurred in reality (especially when I was at uni). So there's a lot of interesting themes for people that have an outgoing social life.
The only advice I would give, is that a lot of the relationships are starting to feel like incest i.e. they're all dating each others ex's. I'm not sure if this means they need to re-jig the cast a little. But at the moment I like most of the cast members.
As a final note - I think it really skews the rating when *some* people that clearly don't like reality TV, come here to give it a bad rating. Specifically, the content of their feedback is rarely beneficial or constructive.