Benidorm is always busy, thats the beauty of it, which ever time of year you go. The best thing is that it is large enough to accomodate everyone but it never feels overcrowded. The Avenida are in a great spot as you can walk 5 mins to Levante beach if too busy go 10 mins further and your in Poniente.
I`ve booked through Direct Holidays and Airtours. Comsos do them. I also have booked a diy holiday to them, I booked flights with Easyjet and the Apartments with Alpha rooms. I personaly prefered the diy way as we didn` t end up driving around Benidorm dropping people off.
We stayed in Albir last year for a week in August it was great for a week, enough for us to do, we went into Benidorm on the bus several times, to be honest it was a bit too hot to be sitting on a very crowded bus. Albir is a small resort compared to Benidorm, if you like small places without crowds you would like it here.
Don`t get the wrong idea about Benidorm, it`s nothing like Blackpool ,like some people say, I think they are the ones that don`t go out and explore it. I`ve been at least 10 times now and still haven`t seen it all.
The Pig and Whistle close by as Bev says is brilliant.