Daniel's home was a great location for us. It was about half a mile to a tube station and it's in a nice area of town. There were several grocery stores and restaurants that were walking distance and there are a few bus stops just steps from the house. We were able to walk into the heart of the city one day- about 4 miles. It was an easy and safe walk but it took a while so we primarily used the tube. (They have a contactless payment option so if you have a card with a contactless symbol on it, all you have to do is touch and go. The contactless is the same price as an Oster card. Couldn't be easier! Trips into the city and back were about $6.90 for each of us. You can also use contactless payments on the bus.)
We also liked that Daniel's apartment was warm- no issues with the heat. The couches in the common space were comfy and we had plenty of space in the kitchen to make meals.
There were a few things we didn't love. The apartment could have been cleaner- we found some hairs in the bed and we needed to re-wash some of the dishes and the bathtub before using it. The bathtub does not have a shower- it was strange to us coming from the US but we heard that's actually pretty common in older homes in the UK. The bedroom window is right next to a streetlamp so it was hard to sleep most nights- a set of blackout curtains or even just some dark curtains could be an easy fix there. Also, we'd recommend a mat at the front door- it rained most days while we were there so we tracked a lot of dirt in.
Overall it wasn't a bad stay but we might look for other places if we come back to London. I wavered between 3 and 4 stars but Daniel seemed very nice so 4 stars it is!