i think its a individual choice, i prefer olu deniz to hisaronu as i like to be near to the beach and lagoon, but i havent stayed at either of these hotels, so cant comment on them

Asena beach is in Olu .It's been a few years since we have stayed there but Great hotel and location.

Asena village is in hisaronu but I havnt stayed there

personally i would say the asena beach as the village gets very busy and a little crowded i like the asena beach for the area and it is only 10 mins by dolmus to hisaronu

depends what you want asena village in hisaronu is walking distance to the nightlife of hisaronu but you need the dolmus for the beach in ould deniz, and asena beach is walking distance of the beach and many bars and restraunts in ouldeniz but a little quieter than hisaronu. Hotels are both friendley but i do find asena village a lot busier in summer season.