Search for hostel or hotel by quarter of a city

Yes, use Google maps. Booking.com has maps where hotels are located also.

Thanks. That sounds good. I'll try it.

Most booking platforms from third party to those operated by chain hotels have some type of mapping function. I will second trying Booking.com, they show the range of lodgings you want, hostels and hotels, on a map, with locations accurate, not approximate, like some platforms. They also show properties that are fully booked, so you get a sense of demand.

However, keep in mind, Booking.com is just showing properties they have agreements with, which for most of Europe is a large number in any city. It is probably worth, as recommended by the previous post, to look at Google maps and search for "Hotels" or "Hostels", that may turn up a few more options.

Depends on which platform and which city, of course. This level of information is not widely used. Next, you'll need to know, of course, the names of the quarters.