I'm Hungarian, and living in Budapest
😉
If you have any questions feel free to ask here, or in PM.
About the watch shops, flea market:
Forget the flea market. There are traders, who know everybody there, so you won't find any good watch, only what is left after them, or you will find these traders... You must be very careful with them, and not believe what they say, only what you see. Don't trust, that the watch has been serviced or anything like that.
You can find nice watch shops on Andrássy út (Omega, Tag Heuer, Hublot, Breitling), and there are a few near Váci utca (Rolex at Vörösmarty tér, Watch De Luxe at Kristóf tér, Orex at Váci utca, and some shops at Haris köz, Pilvax köz, and Petőfi Sándor utca).
Sights to see:
Citadella, Buda Castle, Synagogue, Parliament - Kossuth square, Heroes square (Hősök tere) - there are also the National Museum of Fine Arts, Chain bridge
If you want to go in a bath I'd recommend Széchenyi or Gellért bath. You can have a walk on Margaret island.
If you want to have a good coffee you should visit these shops:
http://welovebudapest.com/cafes.and...roundup.of.budapest.s.speciality.coffee.shops
In the Jewish quarter you will find many restaurants, street food places, pubs made in old houses. (Kazinczy utca, Gozsdu udvar)
You can find many small restaurants, for example I would suggest you to visit Kádár étkezde -
http://welovebudapest.com/cafes.and.restaurants.1/cheap.diner.1/kadar.etkezde
I recommend checking the welovebudapest.com webpage, they have great reviews, and infos.
Be careful with taxi drivers! (I suggest Uber, or bigger taxi companies, never trust the private taxi drivers without any company name/logo)
Oh, I just saw, that this was my first post in this forum, however I'm registered here for ~3 years... I'm usually more active on wus, and instagram (@macimancs)