Very close to the hotel there are many parks and squares where you can walk or just read a book.
Interesting places:
- Italian Garden , Foundry pr. 57 http://history-gatchina.ru/spb/liteiny1.htm
- Summer Garden , Kutuzova Emb., 2 https://www.spb-guide.ru/page_17872.htm
- Tauride Garden , Tavricheskaya St. – Kirochnaya St. https://www.spb-guide.ru/page_21582.htm
- And a few dozen more options for walking: https://www.spb-guide.ru/page_541.htm