40 RON is typical to the main business hotels, and yes if you ask before jumping in, they invariably will take Euros, but the implied exchange rate would normally not make this a good option.

Bucharest was the last place in Europe, along with Kiev, that I used to pre-arrange transfers since the alternative used to be so dodgy. But now I just get the bus, 780 or 783 depending on where I'm going. It takes just as long as a taxi, give or take 10 minutes, and it is safer. However the Hilton and a few other hotels do offer mid priced mini bus transfers. The city has improved enormously compared to 10, 20 years ago.