We stayed 6 nights in this delightful and friendly campsite and recommend it wholeheartedly.
This is a municipal campsite but run by a very cheerful and helpful chap with decent English.
The site itself is located within a meander of the River Aulne, which means there are no roads or noises on three sides of the site. It's accessed from a lane connecting to a very quiet road close to the centre of Chateaulin.
On entering the site one sees the reception area, which includes the site office, a bar/cafe area and slightly apart, the toilet block. The whole thing is attractively constructed from wood and complements the rest of the site.
Pitches fall into two main areas. Those closer to the reception have EHU while non-electric pitches are on the far side of a mature hedgerow. Pitches are grassy and demarked by mature trees and bushes - we had a beautiful silver birch to sit under - and nearly all are flat. Most pitches are not very big, around 80 sq m, but careful choosing will land you a bigger one. The non-electric pitches are less clearly marked and the site is happy for people to pitch where they wish within reason.
When we arrived we had a pitch reserved for us but were free to look around and change if we wished - which we did.
The bar/cafe area opens for breakfast, lunch, tea and early evening, but closes around 8. 30pm (which was fine by us). It serves drinks (Christophe again being the host) and snacky meals such as croques monsieurs and quiches, and an ice-cream can also be had.
Croissants and bread can be pre-ordered, and I have to say that I have never had croissants as delicious as those brought up from the local baker (80 cents each). If one can't be bothered a breakfast tray can also be pre-ordered for 5 Euros, consisting of a large cup of hot beverage, orange juice, a baguette, a croissant, jam and butter.
Toilet facilities are not the most modern but were kept very clean, and showers were lovely and hot and free. Bring your own toilet roll though.
The site has picnic benches one can use, and a playground for younger children (although there weren't many kids on this quiet site).
Campers were an eclectic mix of tenters, caravanners and motorhomers, mostly French but with a good smattering of Dutch, Spanish and British too. Most were mature couples but many were young, especially touring cyclists. Everyone without exception was polite and considerate, no late-night revelling or DVD playing (an increasing issue on many UK sites).
The pretty town of Chateaulin is 10 mins amble, down an incredibly pretty riverside path that is accessed directly from the campsite, so no walking on roads. The town itself is small and has a high street on either side of the river with bridges connecting. There is a selection of bars, tabacs and restaurants, and a half-mile drive gets one to a good-sized Leclerc supermarket.
Apart from being attractive in its own right, Chateaulin is ideally placed for touring Finistere and wider Brittany. 20 miles sees one in the the Breton capital Quimper, or any one of dozens of coastal ports with a plethora of visitor attractions and excellent restaurants (especially seafood - yum!) The Roscoff ferry to Plymouth is also only around 40 miles drive.
And to round off this picture - six nights with EHU cost us only 85 Euros - barely a tenner a night! Frankly this site is as cheap as staying at home, and we will make a point of making sure we visit again, as do several of the campers we met there.