I have flown a few hours in a Eurostar and rate it highly. The cockpit visibility is unsurpassed.
You are quite right! This aircraft is cleared for daylight VFR flying only and such things as artificial horizons serve no purpose if this is to be observed at all times.
As a training aircraft they have proabably fitted the aircraft with the basics but you may find one or more of the fleet has some additional instrumentation fitted, either vacuum driven or digital such as the Dynon units.
Its a great little aircraft to fly but be aware it does not cruise all that fast - 90Kts (ish) so getting from A to B can be a bit of a plod. Ideal I suppose for student navigation.
However, when you have your NPPL(M) you can consider flying some of the faster micros such as the Dynamic - 115Kts cruise.
ps the Eurostar I flew had a decent heater too !!
Good luck on Saturday - weather looks a bit breezy though.