The ONE thing that would revitalize their apartment is the one thing I don't see either of them making any effort in doing; having parties, and more specifically having parties with adventurous guests. Look at what happened last night at Patrik and Clair's place. You had Ben hooking up with some girl in the bathroom and flirting with her all night while his girlfriend slept in the bedroom and the apartment was one of the most watched of the night. Look at what happened with Ary and George's place, they had a ton of guests last night, they all played a strip card game and everybody had a good time, two people wound up fucking and that place was also one of the most watched of the night. Look at what happened with Cleo and Axel when they invited Oscar and everyone was glued to their apartment wondering if Oscar was going to fuck Cleo.
Now look at this place. Em is completely anti-social only inviting Sia over every couple of weeks, but between then there's literally no other friends aside from Bob and Sid. Lisa used to be just as bad in the past. Recently she has at least tried to invite friends over but the problem is her friends aren't adventurous. Unfortunately because of VH flooding their site with apartments, the time for anti-social behavior is over. I don't see Lisa ever doing anything scandalous again and as long as Em continues to only deal with Bob and Sid, she's never going to do anything scandalous or adventurous. There best bet (and only bet at this point) is for better and sexually charged friends to invite over to make this place interesting again.