The first thing is to decide on what type of villa or hotel you specifically want for your trip. Think about the number of beds and rooms you will need along with the amount of space that will be required. Do you plan on having guests, parties or other types of get-together at the villa. Make a list of all your planned activities and then try to predict how the villa will fit into to each one.
Also consider what types of amenities you will want with your accommodations. For example, will you be needing the villa to have a hot tub, sauna or Jacuzzi Should it be equipped with a full kitchen including tableware or will something simpler suffice.
If you plan on having outdoor events, look for offers that include an outdoor patio or balcony with grill. If entertainment is important, check for amenities like flat screen HD television, satellite TV channels, CDDVD player and video game console.
Location is another important matter to consider when choosing the right type of villa. Preferably you will want to be near as many important destinations and activities as possible. If you plan spending much time on the beach or on the Mediterranean, you may want to consider a beach-side villa, but if you are a keen golfer there are some fantastic hotels available with golf courses.
If exploring old castles and other historic sites is more to your taste, then you can decide on locations that are well-placed near these sites.
Obviously though, your budget will determine whether some villas or whole locations are practical or not. Think about how much you are willing to spend along with the ideal amount that you would want to spend on a villa.
Your ultimate decision in most cases will require at least some bit of compromise on your dream villa and your dream rates.