missed this thread so far, let me try to recall (all descriptions fit the time i was there)
pre-clubbing
3 x Tivoli Apartments (Playa d'en Bossa)
1998
Hostal Orosol
Cheap and cheerful, decent location but no pool (had to use the one up the road at another accomodation) and no fridge in the room!
2000
Del Mar Apartments (San Antonio)
Due to one of the groups procrastination, the only place we could get on our budget. hellhole. we got the worst room in the building - ground floor at the back, essentially an afterthought room using the last space. bathroom bigger than the living quarters - three of us stuffed into a hovel. average pool
2001, 2003 & 2004
Xaloc Apartments (San Antonio Bay)
decent place, not too long a walk to the centre of San Antonio, big pool, clean basic rooms
2002
Sol Post Apartments (San Antonio Bay)
Nice enough but basic stuff. Pool ok (despite the activities taking over some times for the attached hotel)
Very long walk to hit the main part of San Antonio
2005 & 2007
Bahia Apartments (San Antonio Bay)
Right at the "action" but still quiet enough - basic but clean rooms with a good pool area.
2006 & 2009
Playa Sol I Apartments (Figueretas)
Only for stag weekends so short stays and it did the job. Good location and ok pool. basic rooms
2010
Playa Sol I -> Mira Mola -> Posiedon III -> Playa Sol I
Booked into the previously used Sol II to save money, on check in (at Playa Sol II) were told that I was closed due to lack of numbers & we were staying in the Mira Mola, got there to be told we were in the overflow Posiedon III, the only ones in it (another couple we were holidaying with arrived on a later flight and were in the apartment below us)...horrible disgusting place, dirty rooms, filthy bathroom, spit balls of paper on the walls. We complained immediately and were told, stay one night and they'd move us - we got put in the Playa Sol II (my wife and I getting a seaview!) - II was the same idea as I with a lesser pool area
2012
Ibiza Sun Apartments (Playa d'en Bossa)
Just refurbished when we went and it showed. very stylish (rooms were like Apple had designed them - all white and clean lines). lots of sunbeds, nice bar although the pool was small. terrific location. v clean & great rooms
2018
Grand Palladium Palace (Playa d'en Bossa)
I'll let you know.....