solution like DALI would be optimal (since some new power wiring is needed so DALI wiring to light fixtures would create little extra trouble).
FYI: The DALI system is purposed for LARGE installations, and focuses only on lighting. It's purpose is to indeed have a single control cabling; each light device would have its own ADDRESS. This way, one could, at random and at any time sub-divide e.g. 300 light devices into, say, left alley-way, middle alley-way and right alley-way, or whatever grouping you'd see fit.
Basically this is really for hotels, government buildings, universities and such.
If you insist on a wired solution, and certainly if you're within EU, I would advise to go the KNX route.
You'd be following the same principle route, i.e. each light appliance will have its own ADDRESS. For KNX there is also only 1 signal cable which is included into the KNX 30V power supply line.
Depending on the cabling of your apartment, you could also use PL KNX (PowerLine), in which case you wouldn't even need the 30V KNX power supply cabling.
As Hari already stated, KNX is integrable with LMCE.
KNX may ultimately have other advantages such as ease of interconnection with ...
KNX may be a little more expensive as Zwave, prices are coming down these days.
It may also be worthwhile considering power monitoring..