We stayed for our honeymoon at the Hyatt Regency right outside of San Juan off the main strip of all the touristy places.
The Hyatt is expensive but it is worth it. They have a water play area at the hotel-swimming pools and lazy River- a really long one. You are right on the beach and there is nothing beside the hotel except their golf course. So basically, you have that part of the beach to yourself. It wasn't crowded at all. It was quiet too.
Here's where we stayed:
Hyatt Dorado Beach Hotel. There is actually 3 hotels (all Hyatt's right beside each other). Across the street is Hyatt Regency Cerromar Hotel and nearby is the Embassy Suites Dorado Del Mar Beach Hotel. You can take a bus to each of the hotels and eat at the other hotels if you want. The food was great, they have a variety of casual and really nice restaurants.
We took a cruise and then extended our stay after the cruise. This is where we went and got a great deal going thru the cruise line. We stayed there 3 days and did a lot of sightseeing and swimming and relaxing. I think it cost $150-175 back in 2000. I'm sure the prices have gone up now. It was more expensive if we didn't go thru the cruise line.
You could check to see what else if farther up the road and outside of San Juan. You might try checking with a travel agent and see if you can get a map. It was about 15-20 minute drive from San Juan. We didn't want to be around a lot of people and this was perfect. If you don't mind the other people, you might check in San Juan where there are lots of hotels right on the beach.
I have pictures, however they aren't on the computer. I have a scrapbook. I may have more information in my scrapbook. I saved just about everything we did in San Juan area. So, if you need more info, I can look for it and see if I can give you more information. Just let me know. We loved Puerto Rico and want to go back. It was beautiful and the weather was great. Hope you find a nice place and have a wonderful time.