15-unit apartment in Sherbrooke

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Hi, i'm currently considering this property (and others like it)...was just wondering if my numbers make sense:

assuming i close at 1,100,000:

mortgage rate = 1.65% (By the way is this realistic for commercial mortgage)

monthly mortgage payment will be 3,581 (yearly total of 42972

other expenses: 31361 (see pic below)

total expenses: 74333

NOI: 107724 - 74333 = 33391

down payment = 20% of 1,100,000 = 220k 

cash ROI = 33391/220000 = 15.2%

seems like a great deal (15.2% cash ROI), however i'm not super familiar with commercial multifamily, anyone want to give their opinion on my numbers? thanks