We did not meet our host, but there was a caretaker who showed us around the apartment and she was very pleasant. Language was a barrier for us because of my very limited french, so it is difficult to say what "communication" would be like if I spoke the language fluently. As it was, we communicated well enough to find the apartment and to figure out how everything worked. However, e-mails with the caretaker were not answered in a timely fashion (I think due to the language barrier), so I am grateful we did not have any problems outside of what to do with recycling and rubbish.
The apartment itself was basic but had everything you could need for a large group not looking for any frills. We were two families (4 children, 1 teenager and 4 adults) and there was plenty of comfortable space for sleeping and eating. The location of this apartment is probably its best feature. It is very close to a beach and very close to shopping. There is also a small shop with basic groceries just a couple of blocks away. It is a shame when you rent towels and linens that hand soap (in the bathrooms) and hand towels and cloths were not included - that part was very inconvenient because we had to go shopping to find some for our children because at our previous rental it was all included. Overall, we have positive feedback and we adored Biarritz - fantastic family holiday.