Worriedkat now I can tell you about Talayot as I can see the keys 
In the main section of the apartments there is a splash pool (our apartment was right next to this and the kids were never out of it) It has fountains/slides etc but is only a paddling pool so not too dangerous. There is the main pool which is deep but has a fenced off shallow paddling pool bit at each end and another paddling pool near the restaurant
Over the road in the quiet bit there are two pools I think they are both quite deep certainly not paddling pools but we didn't venture over there, they tend to put adult only groups or people who have specially requested a quiet room over there as it is a lot quieter.
Also in the main bit there is a play area with plastic forts/play houses/slides etc, another play area with a bigger climbing frame/slide contraption, go karts which run on tokens from reception, a small soft play type area but really aimed at very little toddlers and an area with pool tables/air hockey etc.
There was a mini disco and a show on every night but we didn't go its not really our thing also the kids club is supposed to be really good but again we didn't use it.
The area of Cala N Forcat itself is VERY geared towards small children so much so I think if you went without kids you would hate it but for us (our boys were 6 and 3 when we went) it was fantastic.
Almost every bar/restaurant has a bouncy castle/play area so you can eat/drink whilst the children play. There is the usual options of chicken nuggets and chips etc if the kids are fussy but also plenty of options to have something more authentically Spanish usually in the same restaurant so we were able to indulge our passion for Paella whilst the kids had sausage and chips! I would certainly recommend the bbq at La Ancora (sp?)
The beaches are not fantastic they are not the long sandy beaches you may find in other places they are quite small but very sheltered as they are in little coves and are shallow a long way out so quite safe (watch out for jelly fish though) The beaches are not that easy to find but ask at reception and they will point them out on the map there are 3 in walking distance (the one behind the aqua park was the best imo)
Apparently there are larger beaches elsewhere on the island and car hire is quite cheap so you may want to explore but we didn't. There is a bus that stops right outside the apartments that takes you to Cituddela (sp?) which is the old capital before they changed it to Mahon there are some nice old buildings/shops/restraunts etc there and a little harbour. The bus is only a few Euro's and in Citudella you can catch a bus to other areas of the island if you want.
I cant really think what else to tell you apart from that it was our first holiday abroad with kids and we were nervous taking them but we honestly shouldn't have worried we were looked after really well by the reps and the receptionists at the hotel but also by everyone that we met from waiters to the bus drivers who were all lovely. If you have any questions I'd be happy to answer them.
Oh and sorry for hijacking the thread tbh the Talayot would come under OP's budget but it really is lovely for little kids.