Hotels Ibiza: Pensions and hostels are usually better bets than high rises, and renting a house is the best bet of all. Try Ibiservice for rentals: 34-71-31-00-59. Hotel Los Molinos, Ramon Muntaner 60, Ibiza, from U.S. telephones: 011-34-7l-302-250, fax Ol1-34-71-302-504. Located at Ses Figueretes beach, below the Dalt Vila. Surrounded by gardens and a vast terrace overlooking the sea. Double: $110. Hotel El Corsario, Ponent 5, tel. 011-34-71-301-248. Modest but pleasant small hotel in an old Ibizenca villa in the Dalt Vila. Closed November through Easter. Double: $70. La Ventana, 34-71-39-08-57, a small hotel in the old town of Ibiza is genial and doubles are from $50. El Corsario, 34-71-30-12-48, a very nice small hote in Ibizal with a restaurant. Doubles from $53. Skala Hotel, in Skala, 30-247-31343, doubles from $45. The Albatros Apartments, 34-71-33-06-21, outside Santa Eulalia, near Es Cana are also very nice. Doubles from $46. Closed Nov. - April. Hacienda Na Xamena; Na Xamena, San Miguel, tel. 011-34-71-333-046, fax 011-34-71-333-175. The island's most luxurious hotel, styled after an Ibizenco palace, with its own private cove. Closed November through March. Double: $330.

Restaurants Ibiza: Grill San Rafael, Highway C-731, about 3 1/2 miles from Ibiza, San Rafael, tel. 198-056. An island classic, with an ample menu of fish, meat and other dishes. Ca Na Joana, Carretera San Jose, about six miles from Ibiza, San Josee, tel. 800-158. Probably Ibiza's best restaurant, a charming country house with a very imaginative cook, serving marinated mussels, braised pigeon with Ibizenco potatoes and mushrooms, yogurt mousse with strawberry sauce. Chiringuito de Joan Ferrer, Cala Mastella, Santa Eulalia del Rio, no telephone. Funky, but with terrific food--simple fresh fish, fish soup, rice dishes and the like, cooked by a retired and inevitably colorful fisherman.

Sightseeing Ibiza: The place to go for sheer hedonistic pleasure, a place to laze by the sea and eat simply. The smallest of the B|alearics. It is the Mediterranean's most famous party island! Here you will find huge, frenetic discos, vast nude beaches, nonstop beer gardens. It is also filled with quiet little corners of great rural beauty, which anyone with a rental car can easily discover. The 16th century walls that enclose the so-called Dalt Vila, or Upper Town, of the town of Ibiza, are considered to be a rare and fine example of military architecture from that period. Within them are a huge Gothic cathedral and a small but fascinating archeological museum. The Avenida ANdenes, which runs along the port and the adjacent Marina district is the lively social center of town, full of cafes and bars.