We stayed at Allison's place for a week. She is very nice and kind and she is very responsive to messages.
Although we caused some trouble beforehand due to a change of our stay, Allison made us feel very welcome.
The apartment is accessible through a small hallway also connecting to the main house. The apartment is not lockable, as some other reviews already stated but the family used a different entrance. Also, they are very considerate of your private space and Allison always asked permission to enter.
The place is quite small but it has everything you need. The only thing I would really miss for a longer stay is an oven. The living room, including the cooking amenities, has a carpeted floor so you have to take care not to spill anything.
In the bathroom, the shower racks were a bit rusty but that was no great deal to us. And most important: you can enjoy a hot relaxing shower.
The location of the house is quiet and it is nice to have some nature so close. The bus stop isn't even a 5 minute walk along the park. The bus runs fairly often and takes you to the historic centre in about 30 minutes.
The supermarket in walking distance offers all the basics and some more. For anything else there is a huge 24/7 Tesco superstore just a few bus stops away (the next stop after going straight through the roundabout).
There are also some food places not too far away, but I cannot judge them as we didn't try them out.