Exploring buying an entire building apartment 一棟売り

Hello Members,

Does anyone has experience buying an entire building apartment for the purpose of renting it out?

I am exploring a real estate business where I can rent out an apartment. I thinking to buy an existing building where there is already a tenants (5-6 rooms). I have seen some which was built in the 80s~. I am trying to find built in the 90s onward.

I think my specific questions are:

1. Does the bank usually give loan for this? In eyeing the price of (30-45k jpy / 3,000-4,500 万円). If the bank wont loan me the entire amount (i am pr) how much should I prepare in terms of percentage?
   How about the interest rate, would it be higher compared to usual buying a house?

2. I know maintenance and arrangement with fudousan will be there. Anything I should prepare for? For yearly tax, how much will it cost at least in range?

3. Im seeing an apartment building costing around 3k-4k and full tenant occupancy, it was being sold for owner change. The montly revenue is 30-35万円. What do you think how much will be deducted from the monthly/yearly revenue aside from the loan amortization, insurances?, and taxes? Will there be actual good margin for me here?

4. Potential risk aside losing tenant?

5. Anyone here who is licensed real estate agent that speaks english who is knowledgeable in this are that provides consultation/guidance/etc.? I have n1 but more comfortable to speak in english with this type of huge investings.

6. I am planning to buy a 中古house as well(worth 2-2.5k万円). Having existing loan, will my 2nd loan get approved? I can pay monthly 15-25万円 per month for 25-30yrs loan. My salary is fine and in my late 20s, permanent employee, single. If my real estate investment is good, it can contribute as well to my monthly budget.

Any leads, opinion, etc. is much appreciated.

Thank you guys!