Our landlord is a rather famous footballer.
Since we moved into our flat 6 months ago, we have discovered that 6 out of 7 windows leak very heavily during rain. This is not due to the window but a lack of pointing around the window and the fact the stonework has degraded on the roof so much, it is getting in. The skylight in the communal hall leaks. Our bottom lock did not work, meaning we were protected only by one 'chubb' lock.
The one that got me though was the fact they never told us about the gas leak in the flat! They didn't do anything about it because the previous tenants hadn't brought it up. So when we went in and there was a distinct smell of gas, we had to get it fixed and went without cooker/boiler for some time. Worst thing is, we had the boiler serviced about 2 weeks ago and it was still leaking, the previous guy never even fixed it right!
There was also a problem with the flooring in that a previous repair had been done but they neglected to support the floor, so it was spongy and if you walked in that area there was the danger of putting your foot through the floor!
There are regularly problems with the other 3 flats in the block, have had occasions of water coming through the lights in the flats below us.
This is by no means a cheap flat either... We take very good care of it and our inspections have been spot on. But 6 months on none of these problems are looking like they are going to be fixed. We want to move but there is nothing out there.