Hi, well your staying in teh centre of the town at the pacific so its about fifteen minutes walk from your hotel, from your hotel walk along to the sea front past the fountains (past the egg). If you carry straight on up a slight hill, its a street which is between the bank on the left and the west end on the right, you will come out at cafe del mar, mambo, sugar sea, you will know your almost there when you get to the top of the bank and you see the sea in front of you.....great location but make sure you get there a little early if you want a seat
click on this lilnk, your hotel is at the right of the map next to the roundabout with the red road ..cafe del mar is on the left side of the map on the coast, so if you see the walk is straight along past the marina and up the hill until you get to the coast. if you click on the map it enlarges so you get a bit more detail
http://www.ibiza-spotlight.com/maps/san_antonio03.htm
http://www.ibiza-spotlight.com/maps/san_antonio.htm

cheers for that mate