Castlevania II: Where's Brahm's Mansion?

[Rinnegatamante]

Hi guys, due to the cryptic localization i decided to pick a walkthrough to go through this game for the rest of the game however i'm stuck into this ( https://www.thonky.com/castlevania-ii-simons-quest/rover-to-brahms-mansion ). After the Ferryman if i move to the next screen on the left i don't have a mansion but a town (and if i keep going again to the left there's an area full of slimes ). I even took a look at a video walkthrough ( https://www.youtube.com/watch?v=g7AjPRCVsxg min 30:25 approx) and i don't have that mansion in that area but instead a town (???)

[fender178]

Do you have Dracula's Heart? If you do then select it how the video showed and it will allow you to travel to the next mansion.