We stayed at Jack's place for 4 nights. Check in is convoluted and you have to walk two blocks to a bike rack dragging your luggage to retrieve a key. When we arrived the lock box was not there. We then had to sit on the steps for over two hours waiting for a courier to deliver a key. While there an attempted mugging took place a few feet from us. Has we arrived at night instead of mid day this could have been disastrous. Not a good beginning.
Once in the flat there was no bedding for my grand nephew. The host had been informed that we needed two beds and assumed that bedding would be supplied for the hide a bed. It was not and even after the support team was notified of the issue it was never corrected so my grand nephew slept on the couch rolled up in a sheet.
If you plan to use the hide bed know that you will have to move the table and chairs and the living space then becomes challenging to use.
Travelers should also know that there is major construction going on across the street so it is noisy during the day seven days a week.
That said, the apartment is nice and very clean. It is in a good location and about a seven minute walk from the tube which we used to go everywhere. Unfortunately, the check in issues and lack of bedding colored our experience here.