The Hotel Apartamentos Lux Mar are located a 10 minute walk from the port of Ibiza and less than 5 from Figueretas Beach. Here's a great photo from my balcony. Direct boats to Formentera leave almost from the hotel itself.
Apartamentos Poseidon are located in an area called Es Vive, which is between Ibiza and Playa d'en Bossa, so everything is pretty close. In high season, the apartments attract a young clientele but in May and October the guests tend to be older. This is part of the GPS Hotels chain.
Located in the beautiful, historic, walled city of Dalt Vila, in the old part of Ibiza, is a seventeenth century palace that has been restored by the owner, Pepita Ferrer. Today it is a romantic, charming building, warm and cozy, with a garden terrace. There's a great pool for swimming by day or night, and I wouldn't hesitate to recommend this hotel to anyone travelling to Ibiza. It's close enough to the non-stop carnival of the thousands of tourists from around the world who visit the island, but it's also the perfect spot to relax and get away from the madness ... a pleasant discovery.