Looks ok. The only thing I'd be concerned about with borading mine there is lack of space. They apparently have hutches which are larger than recommended by the RSPCA which are 5ft long, doesn't seem big to me. It doesn't say anywhere either about time out of hutches.
I'd also ask how much they know about the species they are boarding because they say that they out additional vitamin C in guinea pigs water. That doesn't help as ascorbic acid degrades rapidly in water and sunlight so they don't actually get any extra. i think most piggie owners know this and I'd expect a boarding establishment to also know this and take it into account when feeding. Not relevant for you but it just jumps out at me for being a bit of a rookie error.
