Seeking fun in the sun with no hidden costs? Some of Spain’s best hotels offer all-inclusive options — just the ticket for holidaymakers looking for transparency without sacrifice when it comes to the quality of their getaway. When you know where you’re at, any stress just melts away and you can get straight into making the most of every minute of your holiday, whether you want to relax by the pool or try a different activity every day. Although there are plenty of good-value packages around, the trend is towards more upmarket properties, some just for adults, with superb spa and sports facilities, multiple restaurant choices and…