I did not have a good stay at this apartment. I spent one night here and cancelled the remainder of my booking.
First, I booked a different apartment in the same building with Samuel about 10 days in advance, but my booking was changed twice in the days leading up --- the second time the change request came at midnight the day before check-in. I was told this was because my initial booking (and the second) were still in use.
When I arrived, the apartment had clearly been thoroughly cleaned everywhere except the bathroom. The grout in the bathtub wall had a significant amount of black mould. Many of the basic amenities were missing: e.g. no toilet paper, shampoo, soap, etc. To Samuel's credit, he checked in with me multiple times, was always very quick to respond to any message, and all of the basic amenities were available at the front office of the building.
The main reason I did not stay longer was due to the hot water. Perhaps it was just a problem while I stayed there, but the hot water pressure was close to zero in all of the taps (including the shower), and the water which came out was never beyond lukewarm. This made it impossible to clean or do the dishes.
The second main problem was that the shower diverter (i.e. the pin in the bathtub faucet that controls when water came out the shower head) was essentially fused shut. This combined with the lack of hot water meant I could not shower.
At this point I was admittedly frustrated --- both with the last-minute changes to my booking and the problems with the apartment --- so I requested a refund. Samuel responded very quickly, offered to send somebody to fix things immediately, and then was very quick to offer a refund when I did not want to stay.
All in all: I think that Samuel is a very responsive host, and I fully believe he would have tracked down and solved the problems. This building is in a central location, close to subways and downtown, and would likely be OK for a good and cheap short stay, as I expect the above things will be fixed. However, the building feels very run down and the apartment is not in excellent condition.