It's not a very nice flat. On the other hand, it's cheap.

这套房子虽然不大好，可是它价钱便宜。

youdao

We live in a small, fairly dark, but very nice basement flat

我们住在一个小的，光线很暗的，但是很漂亮的地下室公寓。

房价非常高 - SpeakingMax英语口语达人

Only a few weeks ago the prime minister told a group of school children that he lived in "in a little flat, a very nice flat actually, above number 11 Downing Street... but what I get up to in there, that's private".

BBC: Dinner above the shop