Luxury apartments are more than what is within your, no property is luxurious if its surroundings aren't in keeping with its stature and it's the same for Luxury Apartments.
The Apartment Building and Infrastructure
Take the time. Check that everything is to your expectations. Make sure that the building is clean; assess how many flights of stairs you need to climb to your apartment if it's plenty of stairs check there's an elevator.
The "Security" of the Region around Your 5 Star Apartments in Spain
Safety is of utmost importance if you're new to town. Ensure to ask your neighbors how they feel about the region and check out the crime figures.
Transportation Links both Public and Private
Find out where the buses and subways are to your apartment in Spain if you're going to be using public transport. Particularly if you're going to be commuting out of your 5 star flat, if you're going to use your vehicle, then you need to find out where the highways and streets are.
Quality of the Schools
Education is going to be of importance if you're bringing your kids to Spain. Obviously the quality of colleges in the region that's currently going to be a huge factor in choosing between apartments that are Spanish.