I agree with the majority of the previous reviews on this hotel regarding food, staff, location, value for money, cleanliness etc..
We as a group of 5 (2 aduts and 3 teenagers) have just returned from an 11 night all inclusive stay at the Riu Luca Costa Lago. As many other people have commented, the food and drinks are very good here with plenty of choice (the paella was my favourite), and they do cater for fussy eaters too.
In high season, the evening meal times dress code is relaxed, with gents allowed to wear shorts. But going off other reviews, this may change in off-peak times. I also loved the idea of self service beer, juices, soft drinks and coffee.
The staff are all very friendly and profesional, and I have to give special praise to the reception staff who are probably the most welcoming, polite and helpful that I have ever had the pleasure of staying with in over 25 years of holidaying.
The pool is, as others have pointed out, a bit on the small side and can get over-crowded. Having said that, there was always enough space for a dip. There are plenty of sunbeds to go round with a lovely big sun terrace area. And yes, unfortunately, there is the old sunbed-towel reservation disease here. But to be fair, there are probably very, very few hotels where this doesn't go on. We even witnessed 2 ladies reserving sunbeds at midnight one night.
The location was perfect for us, it is in the quieter area of La Colina, roughly a 20 minute walk from Torremolinos, so bare that in mind if you prefer hustle and bustle. The beach is a 2 minute walk away and we are all beach lovers so that suited us. Some lovely fish restaurants along the beach front too.
Also, the local train station is only a 10 minute walk away, and it's an excellent and easy way to get out and about.
We got the impression that the La Colina area is favoured by Spanish holiday makers which wasn't a problem for us, but again, it will be a problem for some. The hotel however was heavily populated by Brits when we were there, with the entertainment programmes mainly aimed at the British guests. And on that subject, the evening entertainment that we did catch, was pretty awful.
The entertainment room was hot and stuffy, and outside on the terrace is where all the smokers congregate. So if you're non-smokers like us, it can be quite uncomfortable out there too.
In a nut-shell, this hotel is very good value, the ups very much outweigh the downs,and we really enjoyed our stay here. There is room for improvement, and within time, I would probably expect the odd improvements here and there to be made.
If you are looking for a relaxing break, and have a little bit of extra spending money, I would definately recomend staying here. If you are more of a Blackpool/Benidorm etc type, then maybe look elswhere.