We have stayed here about 10 times now and love it. We have to go to San Jose at least every couple of months, if not more, and in the last year this has become "our spot". If you have young children, they couldn't be happier with the massive rooms to run around, the pool, the playground, etc.
The location is unbeatable, in the middle of all of the areas we tend to be: Santa Ana, LaSabana, Escazu...And right beside you can find CaffeTorrino, an amazing little Italian deli/restaurant.
The staff at Villas del rio is all very friendly and helpful. The gated parking lot is nice and secure, which is a huge bonus if you're doing a lot of shopping (as you do in SJ!) Wifi signal is nice and strong.
Rates are great (we mostly book on Hotels.com) for what you get. The only minor complaint would be the beds - they are not incredibly comfortable and need to be updated, but otherwise this place is about perfect for us!