We have booked this type of holiday quite a few times now, always end up in a reasonably good place. We always usually find ourselves on the east coast of majorca for some reason! We now know the route from the airport to the east coast off of the back of our hands!
We have ended up in Porto Colom twice - very nice but very quiet resort!
We ended up in Bonaire hotel in Cala Bona a couple of years ago - we were very lucky that time as that was a 4* hotel and we loved it!
Last year we ended up in the Bouganvilla in Sa Coma! we were not happy as it was very child orientated and as it was only me (18) and my mum (in her 40s) it was not suited towards us! The apartment was also a joke! it was a studio with a tiny kitchen and a couch with about an inch between it and the single bed! but anyway, on our second day we managed to transfer hotels to the Ferrera Blanca apartments in Cala Ferrera/Cala D'or for a certain amount of money! and we had the best time in these apartments and the resort was brill too!
So you should be ok with this type of deal and if you dont like where you end up you may have the option of transferring (at the discretion of the reps!) but it can cause alot of stress and money!