We arrived at Arco Iris after getting off the ship at Bilbau as we wanted a stop midway to the coast and wanted to explore Madrid. This site is the perfect place to do this and we stayed 2 nights so that we had a full day in Madrid. The staff are very friendly and the receptionist very helpful. We selected a pitch halfway up the site (which is very steep the deeper you go in to the site) because it was very hot (we went at the beginning of August) and we were only staying for 2 nights so that we could spend a day in Madrid. The bus stop to the local town where you get the bus to Madrid is just outside the site entrance - so convenient. The return is just as easy with the stop right next to the bridge over the motorway so that you can easily get back to the site. The site itself was very, very peaceful. Showerblocks in the middle were good - clean and nice to use. The shower senses are a little alarming at first (they look like cameras in the cubicle!!!) but we were very happy with the facilities. We didn't use the restaurant given the time we were there but used the supermarket for basic things and we were able to get some ice from the bar (they gave us a big bag!). We would definitely use this site again as a stopover to access Madrid or just as a one night stop whilst traveling across the country. It is very convenient from the motorway (which is not intrusive in terms of sound or seeing traffic all the time. We can strongly recommend it if this is what you are looking for.